# Navicula

Navicula est un genre d’algues (diatomées) de la famille des Naviculaceae.

## Synonyme

Navicula a pour synonyme :
* Scolioneis D.G. Mann in F.E. Round, R.M. Crawford & D.G. Mann, 1990

## Liste des espèces, formes et variétés

* Navicula ingenua.
* Navicula lanceolata.
* Navicula oblonga.
* Navicula stesvicensis.
* Navicula tripunctata.
Selon ITIS (5 mars 2021) :
* forme Navicula approximata f. elongata Hustedt
* forme Navicula gastrum f. maxima Tempère & M. Peragallo
* forme Navicula gracilis f. minor Guermeur
* forme Navicula paludosa f. rhomboidea Reimer
* forme Navicula ventraloconfusa f. simplex Lange-Bertalot
* variété Navicula amphibola var. perrieri M. Peragallo & Héribaud in Héribaud
* variété Navicula amphibola var. polymorpha Fusey
* variété Navicula anglica var. lapponica Cleve-Euler
* variété Navicula anglica var. minuta Cleve
* variété Navicula anglica var. subsalsa (Grunow) Cleve
* variété Navicula clementis var. quadristigmata Manguin ex Kociolek & Reviers
* variété Navicula creuzburgensis var. multistriata Patrick
* variété Navicula exigua var. capitata Patrick
* variété Navicula glacialis var. hudsonii Poulin & Cardinal
* variété Navicula incompta var. incurva Reimer
* variété Navicula lagerheimii var. intermedia Hustedt
* variété Navicula lyra var. dilatata Schmidt
* variété Navicula major var. dilatata M. Peragallo
* variété Navicula major var. maxima Tempère & M. Peragallo
* variété Navicula mediocris var. intermedia Reimer
* variété Navicula mesogongyla var. interrupta Cleve
* variété Navicula nyassensis var. capitata O. Miller
* variété Navicula oblongum var. subcapitata Pantocsek
* variété Navicula paramutica var. binodis Bock
* variété Navicula perpusilla var. distans Cleve-Euler
* variété Navicula placentula var. maculata Hustedt
* variété Navicula ruttneri var. capitata Hustedt
* variété Navicula scutelloides var. minutissima Cleve
* variété Navicula scutelloides var. mocarensis Grunow
* variété Navicula seminulum var. hustedtii Patrick
* variété Navicula subhamulata var. undulata Hustedt
* variété Navicula terrestris var. relicta (McCall) Lund
* variété Navicula tuscula var. obtusa Hustedt
* Navicula abbottii Cholnoky & Claus
* Navicula abducta Manguin
* Navicula aboensis (Cleve) Hustedt
* Navicula abruptoides Hustedt
* Navicula abscondita Hustedt
* Navicula abstrusa Hustedt
* Navicula abuensis Foged
* Navicula abunda Hustedt
* Navicula abundoides Cholnoky
* Navicula accedens Hustedt
* Navicula accurata Hustedt
* Navicula achthera Hohn & Hellerman
* Navicula acidobionta Lange-Bertalot
* Navicula acidobiontica T. Watanabe
* Navicula acidophila Cholnoky
* Navicula acrosphaeria (Brébisson) Kützing
* Navicula acuticuneata Metzeltin, Lange-Bertalot & García-Rodríguez
* Navicula acuticuneatula Metzeltin, Lange-Bertalot & García-Rodríguez
* Navicula acutirostris Hustedt
* Navicula acutissima Hustedt
* Navicula adamata Hustedt
* Navicula adamsii Cholnoky
* Navicula addaae Pantocsek
* Navicula addicta Hustedt
* Navicula admenda Hohn & Hellerman
* Navicula adnatoides Cholnoky
* Navicula adumbrata Cholnoky
* Navicula adversa Krasske
* Navicula adversatrix Pantocsek
* Navicula aedfex Pantocsek
* Navicula aegyptica Salah
* Navicula aemilia Forti
* Navicula aequalis Ehrenberg
* Navicula aequatorialis Heiden & Kolbe
* Navicula agatkae Witkowski, Lange-Bertalot & Metzeltin
* Navicula aggerica Reichardt
* Navicula aggesta Hustedt
* Navicula agma Hohn & Hellerman
* Navicula agnewii Cholnoky
* Navicula agnita Hustedt
* Navicula agrestis Hustedt
* Navicula agulhasica Cholnoky
* Navicula aikenensis Patrick
* Navicula aitchelbee Bahls
* Navicula ajajensis Skabitschevsky
* Navicula aktinoides Skuja
* Navicula alaskana Patrick & Freese
* Navicula albanica Krenner
* Navicula alea Hohn & Hellerman
* Navicula aleksandrae Lange-Bertalot, Bogaczewicz-Adamczak & Witkowski
* Navicula algida Grunow
* Navicula algor Hohn & Hellerman
* Navicula alineae Lange-Bertalot
* Navicula alisoviana (Skvortzov) A. Tuji
* Navicula allorgei Manguin
* Navicula alpha Cleve
* Navicula alternans Schumann
* Navicula altiplanensis U. Rumrich & Lange-Bertalot
* Navicula amabilis Hustedt
* Navicula amicorum Grunow
* Navicula ammophila Grunow
* Navicula amnicola Hohn & Hellerman
* Navicula amoenaeformis Manguin
* Navicula amphiceropsis Lange-Bertalot & U. Rumrich
* Navicula amphilepta Ehrenberg
* Navicula amphisphenia Ehrenberg
* Navicula anatis Hohn & Hellerman
* Navicula angolensis Cholnoky
* Navicula angusta Grunow
* Navicula anna Hendey
* Navicula annexa Hustedt
* Navicula antiqua Grunow in Cleve & Möller
* Navicula antonii Lange-Bertalot
* Navicula antonioides Van de Vijver, Jarlman & Lange-Bertalot
* Navicula antverpiensis Van de Vijver & Lange-Bertalot
* Navicula apiculata Brébisson
* Navicula apta Hustedt
* Navicula aquaedurae Lange-Bertalot
* Navicula arctissima Schmidt
* Navicula arctotenelloides Lange-Bertalot & Metzeltin in Lang-Bertalot, Kulbs, Lauser, Norpel-Schempp & Willmann
* Navicula arenaria Donkin
* Navicula arenicola Grunow
* Navicula arenula Hohn & Hellerman
* Navicula argutiola Hohn & Hellerman
* Navicula arkona Lange-Bertalot & Witkowski
* Navicula armata Carter
* Navicula arvensiformis Carter
* Navicula arvensis Hustedt
* Navicula arverna M. Peragallo & Héribaud
* Navicula asiatica F. Meister
* Navicula aspersa Hustedt
* Navicula associata Lange-Bertalot
* Navicula assula Cholnoky
* Navicula astrolabensis Hendey
* Navicula astutus Fontell in manus., Cleve-Euler
* Navicula asymbasia Hohn & Hellerman
* Navicula atacamana Patrick
* Navicula athenae Witkowski, Lange-Bertalot & Metzeltin
* Navicula atomarius Skvortzov
* Navicula atwateri Seddon, Witkowski & Hemphill-Haley
* Navicula auklandica Grunow
* Navicula aurora Sovereign
* Navicula australica (Schmidt) Cleve
* Navicula australoceanica Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
* Navicula australomediocris Lange-Bertalot & R. Schmidt
* Navicula austrocollegarum Lange-Bertalot & Voigt
* Navicula avenacea (Rabenh.) Brébisson ex Grunow in Schneider
* Navicula avenaceoides Gandhi
* Navicula avonensis Round
* Navicula baardsethii Cleve-Euler
* Navicula baccata Brun
* Navicula bacilloides Hustedt
* Navicula bacterium Frenguelli
* Navicula bacula Hohn & Hellerman
* Navicula baicalcollegarum Kulikovskiy & Lange-Bertalot
* Navicula baicalensis Skvortzov & Meyer
* Navicula baicalirmengardis Kulikovskiy, Lange-Bertalot & Metzeltin
* Navicula baicalofrigidicola Metzeltin, Kulikovskiy & Lange-Bertalot
* Navicula baicaloppugnata Kulikovskiy, Lange-Bertalot & Metzeltin
* Navicula baicaloradiosa Kulikovskiy, Lange-Bertalot & Metzeltin
* Navicula bainii Cholnoky
* Navicula barbarica Hustedt
* Navicula barberi Hendey
* Navicula barberiana Foged
* Navicula barentsii Foged
* Navicula barrowiana Patrick & Freese
* Navicula bastianii M. Peragallo in Tempère & M. Peragallo
* Navicula bastowii Hustedt
* Navicula bdesma Hohn
* Navicula beaufortiana Hustedt
* Navicula bella Hustedt
* Navicula bellatii Frenguelli
* Navicula belliatula Archibald
* Navicula bellissima Hustedt
* Navicula bergenensis Hohn
* Navicula bergeri Krasske
* Navicula besarensis Giffen
* Navicula beta Cleve
* Navicula biaculeata Cleve-Euler
* Navicula biakensis Cholnoky
* Navicula bialbata H. Peragallo & M. Peragallo
* Navicula bicapitellata Hustedt
* Navicula bicephala Hustedt
* Navicula biconfusa VanLandingham
* Navicula bicuneolus Metzeltin & Lange-Bertalot
* Navicula bievexa Hohn
* Navicula bifurcatula Hustedt
* Navicula bioculata Grunow
* Navicula bipustulata A. Mann
* Navicula birhis Hohn
* Navicula biskanterae Hustedt
* Navicula bita Hohn
* Navicula bituminosa Pantocsek
* Navicula bjoernoeyaensis Metzeltin, Witkowski & Lange-Bertalot in Metzeltin & Witkowski
* Navicula blasii Frenguelli
* Navicula boergesenii Østrup
* Navicula bogotensis Grunow in Schmidt
* Navicula bongrainii M. Peragallo
* Navicula borneoensis Hustedt
* Navicula borowkae Witkowski, Lange-Bertalot & Metzeltin
* Navicula boseana Skvortzov
* Navicula bossvikensis Busse & Snoeus
* Navicula bottnica Grunow in Cleve & Möller
* Navicula bourrellyi Manguin
* Navicula bourrellyivera Lange-Bertalot, Witkowski & Stachura
* Navicula boyei Østrup
* Navicula bozenae Lange-Bertalot, Witkowski & Zgrundo
* Navicula brasiliensis Grunow
* Navicula brehmii Hustedt
* Navicula brehmioides Hustedt
* Navicula breitenbuchii Lange-Bertalot
* Navicula breviata Hustedt
* Navicula brevirostrata Hustedt in Schmidt & al.
* Navicula broetzii Lange-Bertalot & Reichardt in Lange-Bertalot & Metzeltin
* Navicula brokenshirei Bastow
* Navicula bruchii Grunow in Cleve
* Navicula brunellii Poulin, Hudon & Cardinal
* Navicula brunii Pantocsek
* Navicula buccella Hohn & Hellerman
* Navicula buchansiana Woodhead & Tweed
* Navicula budda Skvortzov
* Navicula burcki Reinhold
* Navicula butreensis Foged
* Navicula caduca Hustedt
* Navicula caeca A. Mann
* Navicula caenosus Carter & Bailey-Watts
* Navicula calcuttensis Skvortzov
* Navicula caldwellii Bastow
* Navicula calva Østrup
* Navicula camerata Cholnoky
* Navicula campanilae Cholnoky
* Navicula canaliculata Cleve
* Navicula canalis Patrick
* Navicula canariana Lange-Bertalot
* Navicula cancellata Donkin
* Navicula cantonatii Lange-Bertalot
* Navicula capitatoradiata Germain
* Navicula capitellata Skvortzov
* Navicula capitulata Frenguelli
* Navicula capsa Hohn
* Navicula capsula Cleve-Euler
* Navicula caractacus Hohn & Hellerman
* Navicula carecti Cholnoky
* Navicula cari Ehrenberg
* Navicula carinata Ehrenberg
* Navicula carinifera Grunow in Schmidt & al.
* Navicula cariocincta Lange-Bertalot in Tsarenko & al.
* Navicula carminata Hustedt
* Navicula carolinensis Ehrenberg
* Navicula caroliniae Bahls
* Navicula carteri VanLandingham
* Navicula carvajaliana Patrick
* Navicula cascadensis Sovereign
* Navicula casei Cholnoky
* Navicula cassieana Foged
* Navicula catalanogermanica Lange-Bertalot & G. Hofmann in Lange-Bertalot
* Navicula cataracta-rheni Lange-Bertalot
* Navicula cataractarum Hustedt
* Navicula catarinensis Krasske
* Navicula caterva Hohn & Hellerman
* Navicula caucasica R. Ross
* Navicula caudata Kulikovskiy, Metzeltin & Lange-Bertalot
* Navicula cavernae Cholnoky
* Navicula ceciliae Van de Vijver, Jarlman & Lange-Bertalot
* Navicula celinei Witkowski, Metzeltin & Lange-Bertalot
* Navicula cellesensis Héribaud & M. Peragallo
* Navicula cendronii Manguin
* Navicula centraster Cleve
* Navicula centropunctata Hustedt
* Navicula cerneutia Hohn
* Navicula certa F. Meister
* Navicula chandolensis Gandhi
* Navicula charlottae Foged
* Navicula chasmaensis Foged
* Navicula chasmigera Cholnoky
* Navicula chi Cleve
* Navicula chiarae Lange-Bertalot & Genkal
* Navicula chinensis Skvortzov
* Navicula cholnokyana Foged
* Navicula cholnokyii Gandhi
* Navicula chyzerii Pantocsek
* Navicula cimex Cholnoky
* Navicula cincta (Ehrenberg) Ralfs in Pritchard
* Navicula cinctaeformis Hustedt
* Navicula cingulatoides Cholnoky
* Navicula cinna Hohn & Hellerman
* Navicula cipollae Zanon
* Navicula citriformis Cleve-Euler
* Navicula citrus Krasske
* Navicula clagesii Gerd Moser, Lange-Bertalot & Metzeltin
* Navicula claromontensis Héribaud
* Navicula claytonii Carter
* Navicula climacospheniae Booth
* Navicula cluthensis Gregory
* Navicula cluthensoides Hustedt
* Navicula coccinella Metzeltin & Lange-Bertalot
* Navicula cocconioides Carter
* Navicula coei Cholnoky
* Navicula colii Héribaud
* Navicula collersonii Roberts & McMinn
* Navicula columbiana Hustedt
* Navicula columnaris Ehrenberg
* Navicula comerei Héribaud
* Navicula comoides (Dillwyn) H. Peragallo & M. Peragallo
* Navicula completa Hustedt
* Navicula completaoides Foged
* Navicula compositestriata Jasnitsky
* Navicula compressicauda Schmidt
* Navicula concamerata Hustedt
* Navicula concentrica Carter
* Navicula concinna Hustedt
* Navicula concordia Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
* Navicula confidens Cholnoky
* Navicula congerana Hagelstein
* Navicula consanguinea Cleve
* Navicula consentanea Hustedt
* Navicula contempta Krasske
* Navicula contentaeformis Manguin
* Navicula contortula Sovereign
* Navicula contraria Patrick
* Navicula convergens Patrick
* Navicula coraliana Metzeltin & Lange-Bertalot
* Navicula cordillerae Frenguelli
* Navicula corrugata Manguin
* Navicula cortanensis Krasske
* Navicula corticela Manguin ex Kociolek & Reviers
* Navicula corymbosa (Agardh) Cleve
* Navicula costuloides Skvortzov
* Navicula crassirostris Grunow in Cleve & Grunow
* Navicula crassulexigua Reichardt
* Navicula craticularis Frenguelli
* Navicula cremorne Hohn & Hellerman
* Navicula criophiliforma Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
* Navicula crispa Krasske
* Navicula cristula Hohn
* Navicula crocodill Cholnoky
* Navicula cronullensis Wood
* Navicula crucialis Frenguelli
* Navicula crucifera Grunow in Schmidt
* Navicula crucigeriformis Hustedt
* Navicula cryptocefalsa Lange-Bertalot
* Navicula cryptocephala Kützing
* Navicula cryptocephaloides Hustedt
* Navicula cryptofallax Lange-Bertalot & G. Hofmann
* Navicula cryptogaster Lowe
* Navicula cryptorrhynchus Cholnoky
* Navicula cryptostriata Salah
* Navicula cryptotenella Lange-Bertalot
* Navicula cryptotenelloides Lange-Bertalot
* Navicula csaszkaae Pantocsek
* Navicula cubitus Tempère & Brun
* Navicula cucullus Pantocsek
* Navicula cuneata O'Meara
* Navicula curiosa Hustedt
* Navicula curta Hustedt
* Navicula curtisterna Lange-Bertalot
* Navicula curvilineata A. Mann
* Navicula curvipunctata Leuduger-Fortmorel
* Navicula cuspis O'Meara
* Navicula cyclops A. Mann
* Navicula cylindrata Kulikovskiy, Lange-Bertalot & Metzeltin
* Navicula cymbelliformis Cholnoky
* Navicula cymbula Donkin
* Navicula cyprinus (W. Smith) Boyer
* Navicula dahurica Skvortzov
* Navicula dailyi Reimer
* Navicula darwiniana Seddon & Witkowski
* Navicula dealpina Lange-Bertalot
* Navicula debilissima Grunow
* Navicula demerara Grunow
* Navicula demissa Hustedt
* Navicula densestriata Hustedt
* Navicula densilineolata Lange-Bertalot
* Navicula detenta Hustedt
* Navicula diagonalis Bailey
* Navicula dibola Hohn
* Navicula difficillima Hustedt
* Navicula difficillimoides Hustedt
* Navicula digitoconvergens Lange-Bertalot
* Navicula digitoradiata (Gregory) Ralfs in Pritchard
* Navicula dilucida Hustedt
* Navicula directa (W. Smith) Brébisson
* Navicula disputans Patrick
* Navicula dissipata Hustedt
* Navicula distans (W. Smith) Brébisson
* Navicula distinctastriata Hohn & Hellerman
* Navicula diversistriata Hustedt
* Navicula doehleri Lange-Bertalot
* Navicula duerrenbergiana Hustedt in Schmidt & al.
* Navicula dulcis Krasske
* Navicula dumontiae Baardseth & Taasen
* Navicula duomedia Patrick
* Navicula dystrophica Patrick
* Navicula ebor Hohn & Hellerman
* Navicula ehrlichiae Lange-Bertalot & Reichardt
* Navicula eichhorniaephila Manguin ex Kociolek & Reviers
* Navicula eidrigiana Carter
* Navicula eiowana Ehrenberg
* Navicula elaphros Hohn & Hellerman
* Navicula electrolytifuga Lange-Bertalot & U. Rumrich
* Navicula elegantissima M. Peragallo in Tempère & Peragallo
* Navicula elmorei Patrick
* Navicula elsoniana Patrick & Freese
* Navicula eponka Hohn
* Navicula erifuga Lange-Bertalot in Kammer & Lange-Bertalot
* Navicula escambia (R.M. Patrick) Metzeltin & Lange-Bertalot
* Navicula evexa Sovereign
* Navicula exilis Kützing
* Navicula exilissima Grunow in Van Heurck
* Navicula expecta VanLandingham
* Navicula fabiformis Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
* Navicula faceta Hustedt
* Navicula farta Hustedt in Schmidt & al.
* Navicula fauta Hustedt
* Navicula festiva Krasske
* Navicula feuerbornii Hustedt
* Navicula flagellifera Hustedt
* Navicula flanatica Grunow
* Navicula flandriae Van de Vijver & A. Mertens
* Navicula flatheadensis Bahls
* Navicula flavasinensis Moghadam
* Navicula flebilis Cholnoky
* Navicula flexuosa Ehrenberg
* Navicula fluens Hustedt
* Navicula fluminitica Camburn
* Navicula formenterae Cleve
* Navicula fortis (Gregory) Ralfs
* Navicula fragilarioides Krasske
* Navicula freesei Patrick & Freese
* Navicula friedelhinziae Wojtal, Ognjanova-Rumenova, Buczkó & Van de Vijver
* Navicula friesneri Reimer
* Navicula friska Carter
* Navicula fritschii Lund
* Navicula frugalis Hustedt
* Navicula fulva Ehrenberg
* Navicula fusidium Ehrenberg
* Navicula galapagoensis Seddon & Witkowski
* Navicula galloae Bahls
* Navicula gaufinii Moghadam
* Navicula geitleri Hustedt
* Navicula gelida Grunow
* Navicula genifera Schmidt
* Navicula genovefae Fusey
* Navicula gerloffii Schimanski
* Navicula germainii Wallace
* Navicula germanopolonica Witkowski & Lange-Bertalot
* Navicula geronimensis Potapova in Potapova & Charles
* Navicula gieskesii Cholnoky
* Navicula glaciei Van Heurck
* Navicula globulifera Hustedt
* Navicula glomus Carter
* Navicula goersii Bahls
* Navicula gololobovae Chudaev
* Navicula gondwana Lange-Bertalot
* Navicula gottlandica Grunow
* Navicula graciloides Mayer
* Navicula gradatoides Cholnoky
* Navicula granii (E. Jørgensen) Gran
* Navicula grasmueckii Lange-Bertalot
* Navicula gregaria Donkin
* Navicula grevilleana Hendey
* Navicula grimmei Krasske
* Navicula groschopfii Hustedt
* Navicula gurovii Pantocsek
* Navicula guttata Grunow
* Navicula gysingensis Foged
* Navicula habena Hohn & Hellerman
* Navicula hagelsteinii Hustedt
* Navicula halinae Hustedt
* Navicula hamiltonii Witkowski, Lange-Bertalot & Metzeltin
* Navicula hanseatica Lange-Bertalot & Stachura in Witkowski, Lange-Bertalot & Stachura
* Navicula hansenii M. Møller
* Navicula harderi Hustedt in Brendemühl
* Navicula hariola Cholnoky
* Navicula harmoniae Bahls
* Navicula hasta Pantocsek
* Navicula hastata Jurilj
* Navicula hastatula Lange-Bertalot & Miho
* Navicula hedinii Hustedt
* Navicula heimansii van Dam & Kooyman
* Navicula heimansioides Lange-Bertalot
* Navicula henriquesii Zimmermann
* Navicula herbstiae Metzeltin & Lange-Bertalot
* Navicula heufleri Grunow
* Navicula hintzii Lange-Bertalot
* Navicula hippodontaformis Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
* Navicula hodgeana Patrick & Freese
* Navicula hofmanniae Lange-Bertalot
* Navicula humboldtiana Lange-Bertalot & U. Rumrich
* Navicula hustedtiana Simonsen
* Navicula hyalina (Ehrenberg) Kützing
* Navicula illinoensis Ehrenberg
* Navicula imbellis Hohn & Hellerman
* Navicula imbricata Bock
* Navicula imperfecta Cleve
* Navicula impexa Hustedt
* Navicula incarum U. Rumrich & Lange-Bertalot
* Navicula incomitatus Hohn & Hellerman
* Navicula incomposita Hagelstein
* Navicula indemnis Hohn & Hellerman
* Navicula indianensis Reimer
* Navicula indicatrix VanLandingham
* Navicula inflata (Kützing) Kützing
* Navicula inflexa (Gregory) Ralfs in Pritchard
* Navicula infrenis Hohn & Hellerman
* Navicula ingapirca Lange-Bertalot & U. Rumrich
* Navicula ingenua Hustedt
* Navicula ingrata Krasske
* Navicula inpossibilis Cholnoky
* Navicula insequens Hustedt
* Navicula insulsa Metzeltin & Lange-Bertalot
* Navicula ireneae Van de Vijver, Jarlman & Lange-Bertalot
* Navicula irmengardis Lange-Bertalot
* Navicula irminae Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
* Navicula isabelensiformis Seddon & Witkowski
* Navicula isabelensiminor Seddon & Witkowski
* Navicula isabelensis Seddon & Witkowski
* Navicula isabelensoides Seddon & Witkowski
* Navicula iserentantii Lange-Bertalot & Witkowski
* Navicula jakovljevici Hustedt
* Navicula jeffreyi Hallegraef & Burford
* Navicula jentzschii Grunow
* Navicula johannrossii Giffen
* Navicula jonssonii Østrup
* Navicula kariana Grunow in Cleve & Grunow
* Navicula karsia Hohn
* Navicula kefvingensis (Ehrenberg) Kützing
* Navicula kepesii Grunow
* Navicula kincaidii Sovereign
* Navicula kisber Hohn & Hellerman
* Navicula kjellmanii (Cleve in Cleve & Grunow) Cleve
* Navicula kohlenbachii Lange-Bertalot & U. Rumrich
* Navicula kohlmaieri Lange-Bertalot
* Navicula korzeniewskii Witkowski, Lange-Bertalot & Metzeltin
* Navicula kotschyi Grunow
* Navicula krammerae Lange-Bertalot
* Navicula kuseliana Lange-Bertalot & U. Rumrich
* Navicula lacunarum Grunow
* Navicula lagerstedtii O'Meara
* Navicula lagunae Seddon & Witkowski
* Navicula lalia Hohn & Hellerman
* Navicula lanceolata (Agardh) Kützing
* Navicula lancettula Schumann
* Navicula latelongitudinalis Patrick
* Navicula laterostrata Hustedt
* Navicula lauca U. Rumrich & Lange-Bertalot
* Navicula leistikowii Lange-Bertalot
* Navicula lenzii Hustedt
* Navicula lepidissima Cleve-Euler
* Navicula leptoloba Meister
* Navicula leptorhynchus Ehrenberg
* Navicula leptostriata Jørgensen
* Navicula libellus Gregory
* Navicula libonensis Schoeman
* Navicula limata Hustedt
* Navicula lineola Grunow
* Navicula lirata Ehrenberg
* Navicula litos Hohn & Hellerman
* Navicula lohmannii Lange-Bertalot & U. Rumrich
* Navicula loibl-sittlerii E. Reichardt
* Navicula longa (Gregory) Ralfs in Pritchard
* Navicula longicephala Hustedt
* Navicula luciae Witkowski & Lange-Bertalot in Lange-Bertalot & Genkal
* Navicula lucidula Grunow
* Navicula ludloviana Schmidt
* Navicula lumbricastriata Hohn & Hellerman
* Navicula lundii Reichardt
* Navicula lusitanica Zimmermann
* Navicula lusoria Giffen
* Navicula luzonensis Hustedt
* Navicula macaronesica Lange-Bertalot
* Navicula maculata (Bailey) Edwards
* Navicula madeirensis Lange-Bertalot
* Navicula magnifica Hustedt
* Navicula mahoodii Witkowski & Witon
* Navicula maidanae Metzeltin & Lange-Bertalot
* Navicula mannii Hagelstein
* Navicula margalithii Lange-Bertalot
* Navicula martyi Lauby
* Navicula mascarenae (Coste & Ricard) Metzeltin & Lange-Bertalot
* Navicula meandrinoides Hustedt
* Navicula mediacomplexa Hohn & Hellerman
* Navicula mediahelos Hohn & Hellerman
* Navicula medicostata Reichardt
* Navicula medioconvexa Hustedt
* Navicula mediterranea Cleve & Brun
* Navicula melanesica Lange-Bertalot & Steindorf
* Navicula menaiana Hendey
* Navicula meniscoides Hustedt
* Navicula menisculus Schumann
* Navicula meniscus Schumann
* Navicula meulemansii Mertens, Witkowski & Lange-Bertalot
* Navicula mica Hohn & Hellerman
* Navicula microcari Lange-Bertalot
* Navicula microdicta Cholnoky
* Navicula microdigitoradiata Lange-Bertalot
* Navicula micropupula Cholnoky
* Navicula migma Hohn & Hellerman
* Navicula minnewaukonensis Elmore
* Navicula minthe Hohn & Hellerman
* Navicula minuscula Grunow in Van Heurck
* Navicula minuta Skvortzov
* Navicula misella Hustedt
* Navicula moenofranconica Lange-Bertalot
* Navicula mollicula Hustedt
* Navicula mollis (W. Smith) Cleve
* Navicula monmouthianastodderi Yermeloff
* Navicula montanensis Moghadam
* Navicula moskalii Metzeltin, Witkowski & Lange-Bertalot in Metzeltin & Witkowski
* Navicula mournei Patrick
* Navicula mucicola Hustedt
* Navicula mucronata Elmore
* Navicula multigramme Hohn & Hellerman
* Navicula muraloides Hustedt
* Navicula muscerda Hohn
* Navicula namibica Lange-Bertalot & U. Rumrich in U. Rumrich, Lange-Bertalot & Rumrich
* Navicula narinosa Hohn
* Navicula nasuta Giffen
* Navicula neglecta Kützing
* Navicula nemoris Hohn & Hellerman
* Navicula neoventricosa Hustedt
* Navicula nigrii De Notaris
* Navicula nimbus Hohn & Hellerman
* Navicula nipponica (Skvortzov) Lange-Bertalot
* Navicula nodulosa (Bréb.) Kützing
* Navicula nolens Simonsen
* Navicula nonana Cholnoky
* Navicula normalis Hustedt
* Navicula normaloides Cholnoky
* Navicula northumbrica Donkin
* Navicula notanda Østrup
* Navicula notha Wallace
* Navicula novaesiberica Lange-Bertalot
* Navicula nugalis Hohn & Hellerman
* Navicula oblonga (Kützing) Kützing
* Navicula oblongata Kützing
* Navicula oblongiformis Hustedt
* Navicula obtusangula (Hustedt) Simonsen
* Navicula obtuseprotracta Hustedt
* Navicula ocallii Hohn
* Navicula odiosa Wallace
* Navicula oestrupii Cleve
* Navicula ohiensis Ehrenberg
* Navicula okawangoi Cholnoky
* Navicula oligotraphenta Lange-Bertalot & G. Hofmann in Lange-Bertalot
* Navicula omega Cleve
* Navicula oppugnata Hustedt
* Navicula orangiana Patrick
* Navicula orbiculata Patrick
* Navicula ordinaria Hustedt
* Navicula oregonica Ehrenberg
* Navicula oxigua (Gregory) Müller
* Navicula paanaensis Cleve-Euler
* Navicula paca Hohn & Hellerman
* Navicula pachyptera Ehrenberg
* Navicula pagophila Grunow
* Navicula palpebralis (Brébisson) W. Smith
* Navicula palpebrulum Cholnoky
* Navicula pampeana Frenguelli
* Navicula papilioarea Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
* Navicula parablis Hohn & Hellerman
* Navicula paracari Lange-Bertalot
* Navicula parahasta Lange-Bertalot & Miho
* Navicula parapontica Witkowski, Kulikovskiy, Nevrova & Lange-Bertalot
* Navicula paratunkae Peterson
* Navicula pargemina Underwood & Yallop
* Navicula parinacota U. Rumrich & Lange-Bertalot
* Navicula parodia Hohn
* Navicula partabgarhensis Gandhi
* Navicula parthenopea H. Peragallo & M. Peragallo
* Navicula parunculus Hustedt
* Navicula parva (Ehrenberg) Ralfs in Pritchard
* Navicula parvipendata Cholnoky
* Navicula patula W. Smith
* Navicula paucivisitata Patrick
* Navicula paul-schulzii Witkowski & Lange-Bertalot
* Navicula paupercula Lange-Bertalot & U. Rumrich
* Navicula pavillardi Hustedt
* Navicula pediculus Cleve
* Navicula pelagica Cleve
* Navicula pellicola Brockmann
* Navicula pelliculosa (Kützing) Hilse
* Navicula pellucidoides Hustedt
* Navicula pennata Schmidt in Schmidt & al.
* Navicula peragalli Brun
* Navicula peratomus Hustedt
* Navicula peregrina (Ehrenberg) Kützing
* Navicula peregrinopsis Lange-Bertalot & Witkowski
* Navicula perexigua Østrup
* Navicula perhyalina Cleve-Euler
* Navicula perlatoides Hustedt
* Navicula perlucens Østrup
* Navicula perminuta Grunow in Van Heurck
* Navicula permulsa Hustedt
* Navicula perobesa Hustedt
* Navicula perotii Patrick & Freese
* Navicula perparva Hustedt
* Navicula perpendicularis Cleve-Euler
* Navicula perpicea Kulikovskiy, Lange-Bertalot & Metzeltin
* Navicula perrhombus (Hustedt) Simonsen
* Navicula perrostrata Hustedt
* Navicula perrotettii (Grunow) Cleve
* Navicula persica Rabenhorst
* Navicula pertenuis Hustedt
* Navicula pertinax Cholnoky
* Navicula perturbata Jurilj
* Navicula peterseni Hustedt
* Navicula peticolasii M. Peragallo in Tempère & M. Peragallo
* Navicula petrmarvanii Falasco & Ector
* Navicula phyllepta Kützing
* Navicula phylleptosoma Lange-Bertalot in Lange-Bertalot & Genkal
* Navicula phylleptosomaformis Seddon & Witkowski
* Navicula piercei Bahls
* Navicula pierre-comperei Lange-Bertalot & G. Hofmann
* Navicula platalea Ehrenberg
* Navicula platystoma Ehrenberg
* Navicula platyventris F. Meister
* Navicula pletura Hohn
* Navicula plicata Donkin
* Navicula podzorskii Lange-Bertalot
* Navicula polaris Lagerstedt
* Navicula pontica (Mereschkowsky) Witkowski, Kulikovskiy, Nevrova & Lange-Bertalot
* Navicula porifera Hustedt
* Navicula potzgeri Reimer
* Navicula praedicabilis Simonsen
* Navicula praedii Cholnoky
* Navicula praeterita Hustedt
* Navicula pragma Hohn & Hellerman
* Navicula pseudoarvensis Hustedt
* Navicula pseudobryophila Hustedt
* Navicula pseudofrickia Patrick
* Navicula pseudokotschyi Lange-Bertalot in Kammer & Lange-Bertalot
* Navicula pseudolacertosa Cholnoky
* Navicula pseudolanceolata Lange-Bertalot
* Navicula pseudonivalis Bock
* Navicula pseudopalebralis Hendey
* Navicula pseudopelliculosa Manguin
* Navicula pseudoppugnata Lange-Bertalot & Miho
* Navicula pseudoreinhardtii Patrick
* Navicula pseudosalinarioides Giffen
* Navicula pseudosilicula Hustedt
* Navicula pseudotenelloides Krasske
* Navicula pseudoventralis Hustedt
* Navicula punctata Donkin
* Navicula quadripartita Hustedt
* Navicula quadripedis Cleve-Euler
* Navicula quarnerensoides Hustedt
* Navicula quasidisjuncta Lange-Bertalot & U. Rumrich
* Navicula quechua Lange-Bertalot & U. Rumrich
* Navicula rabenhorstii Ralfs
* Navicula radians Héribaud
* Navicula radiosa Kützing
* Navicula radiosafallax Lange-Bertalot
* Navicula radiosiola Lange-Bertalot
* Navicula radiostriata (Hustedt) Simonsen
* Navicula rainierensis Sovereign
* Navicula rajmundii Witkowski, Lange-Bertalot & Metzeltin
* Navicula rakowskae Lange-Bertalot
* Navicula ramosissima (Agardh) Cleve
* Navicula ranomafanensis (Manguin) Metzeltin & Lange-Bertalot
* Navicula recava Hohn & Hellerman
* Navicula recens Lange-Bertalot in Krammer & Lange-Bertalot
* Navicula recurva (F. Meister) Witkowski, Lange-Bertalot & Metzeltin
* Navicula recurvata Gran
* Navicula reichardtiana Lange-Bertalot in Lange-Bertalot & Krammer
* Navicula reinhardtii (Grunow) Grunow
* Navicula retusa Donkin
* Navicula rhodana Hohn & Hellerman
* Navicula rhynchocephala Kützing
* Navicula rhynchotella Lange-Bertalot
* Navicula ricardae Lange-Bertalot
* Navicula riediana Lange-Bertalot & U. Rumrich in U. Rumrich, Lange-Bertalot & Rumrich
* Navicula riotecensis Metzeltin & Lange-Bertalot
* Navicula rivalis Hohn & Hellerman
* Navicula rivulorum Lange-Bertalot & U. Rumrich
* Navicula rolandii Wunsam, Witkowski & Lange-Bertalot
* Navicula rostellata Kützing
* Navicula rotaeana (Rabenh.) Grunow in Van Heurck
* Navicula rotesta Carter
* Navicula rugula Hohn & Hellerman
* Navicula rumaniensis Hustedt
* Navicula runtuensis Cholnoky
* Navicula rusticensis Lobban
* Navicula sabiniana Patrick
* Navicula sagitta Hohn & Hellerman
* Navicula salinarum Grunow
* Navicula salinicola Hustedt
* Navicula sanctaecrucis Østrup
* Navicula sanctamargaritae Beauger
* Navicula saugerii Desmazieres
* Navicula savannahiana Patrick
* Navicula scabellum Hustedt
* Navicula scalprum Kützing
* Navicula scaniae Van de Vijver, Jarlman & Lange-Bertalot
* Navicula schaarschmidtii Pantocsek
* Navicula schadei Krasske
* Navicula schmassmannii Hustedt
* Navicula schroeteri F. Meister
* Navicula schweigeri Bahls
* Navicula scintillosa Manguin
* Navicula scoliopleuroides Quint
* Navicula scoresbyi Foged
* Navicula scottiae Cholnoky
* Navicula scutula Hohn
* Navicula scutum Schumann
* Navicula secreta Pantocsek
* Navicula seibigiana Lange-Bertalot
* Navicula semen Ehrenberg
* Navicula semenoides Hustedt
* Navicula semidiversa Manguin
* Navicula seminularia Cholnoky
* Navicula seminuloides Hustedt
* Navicula septata Hustedt
* Navicula septenaria Bailey
* Navicula septentrionalis (Grunow) Gran
* Navicula sequens Barber & Carter
* Navicula serena Frenguelli
* Navicula sericea Cholnoky
* Navicula setanensis Okuno
* Navicula setschwanensis Skuja
* Navicula setzeri Patrick & Freese
* Navicula severascens Cholnoky
* Navicula sibirica (Grunow in Cleve & Möller) Cleve
* Navicula sieminskiae Lange-Bertalot & Witkowski
* Navicula sigma Ehrenberg
* Navicula silens Cholnoky
* Navicula silicea Skvortzov
* Navicula silvahercynia Lange-Bertalot
* Navicula silvatica Cholnoky
* Navicula silvestrina Zanon
* Navicula silvicola Cholnoky
* Navicula simplex Krasske
* Navicula simplus F. Meister
* Navicula simula Patrick
* Navicula singularis Schmidt
* Navicula sitiens Cholnoky
* Navicula sjoersii Busse & Snoeus
* Navicula skabitchewskyayae Kulikovskiy, Lange-Bertalot & Metzeltin
* Navicula skabitschewsky Sabelina
* Navicula skalenastriata Hohn
* Navicula skiftei Foged
* Navicula slesvicensis Grunow in Van Heurck
* Navicula smeerenburgensis Foged
* Navicula sorella Hohn & Hellerman
* Navicula sovereignii Bahls
* Navicula spicula (Hickie) Cleve
* Navicula spirata Hustedt
* Navicula splendicula VanLandingham
* Navicula spuria Cleve
* Navicula stachurae Witkowski, Lange-Bertalot & Metzeltin
* Navicula staffordiae Bahls
* Navicula stankovicii Hustedt
* Navicula starmachii Witkowski & Lange-Bertalot
* Navicula starmachioides (Witkowski & Lange-Bertalot) Witkowski & Lange-Bertalot in Metzeltin & Witkowski
* Navicula staurifera Thomas in Thomas & Chase
* Navicula stompsii Cholnoky
* Navicula streckerae Lange-Bertalot & Witkowski in Witkowski & al.
* Navicula striolata (Grunow) Lange-Bertalot
* Navicula structa Lange-Bertalot & Steindorf
* Navicula subadnata Hustedt
* Navicula subagnita Proschkina-Lavrenko
* Navicula subalpina Reichardt
* Navicula subapiculata (Grunow in Cleve & Grunow) Hustedt
* Navicula subarvensis Hustedt
* Navicula subconcentrica Lange-Bertalot
* Navicula subcontenta Hustedt
* Navicula subdiffusa Hustedt
* Navicula subelata Gandhi
* Navicula subexilissima Carter
* Navicula subfasciata Patrick
* Navicula subhexagona Hustedt
* Navicula subinflatoides Hustedt
* Navicula subnympharum Hustedt
* Navicula subocculta Hustedt
* Navicula subrhynchocephala Hustedt
* Navicula subrostellata Hustedt
* Navicula subrotundata Hustedt
* Navicula subseminulum Hustedt in Brendemühl
* Navicula subsulcata Hustedt
* Navicula subvasta Carter
* Navicula subwalkeri Bahls & Potapova
* Navicula superba Cleve
* Navicula supergregaria Lange-Bertalot & U. Rumrich in U. Rumrich, Lange-Bertalot & Rumrich
* Navicula supleeorum Bahls
* Navicula suprinii Gerd Moser, Lange-Bertalot & Metzeltin
* Navicula swaniana Moghadam
* Navicula symmetrica Patrick
* Navicula syvertsenii Witkowski, Metzeltin & lange-Bertalot in Metzeltin & Witkowski
* Navicula szlachetkoi Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
* Navicula taedens Cholnoky
* Navicula taedia Wallich
* Navicula tanakae Fukushima, Ko-Bayashi & Yoshitake
* Navicula taraxa Hohn & Hellerman
* Navicula tenelloides Hustedt
* Navicula tentata Cholnoky
* Navicula tenuipunctata Hustedt
* Navicula tenuis Krasske
* Navicula texana Patrick
* Navicula thermes Elmore
* Navicula thienemannii Hustedt
* Navicula torifera Hustedt
* Navicula tracery Hohn & Hellerman
* Navicula transistantioides Foged
* Navicula transitans Cleve
* Navicula transversa Bory
* Navicula tridentula Krasske
* Navicula trigonocephala Cleve
* Navicula trilatera Bahls
* Navicula tripunctata (O.F. Müller) Bory
* Navicula trivialis Lange-Bertalot
* Navicula trophicatrix Lange-Bertalot in Lange-Bertalot & Metzeltin
* Navicula tropicoidea Witkowski, Metzeltin & Lange-Bertalot
* Navicula tulugakii Carter
* Navicula turris Hustedt in Schmidt & al.
* Navicula ultratenelloides Lange-Bertalot
* Navicula umbra Hohn & Hellerman
* Navicula uniseriata Østrup
* Navicula upsaliensis (Grunow) M. Peragallo
* Navicula upupensis Cholnoky
* Navicula utlandshoerniensis VanLandingham
* Navicula valida Cleve & Grunow
* Navicula vandamii Schoeman & Archibald
* Navicula vaneei Lange-Bertalot in Witkowski, Lange-Bertalot & Stachura
* Navicula vanhoeffenii Gran
* Navicula vanidica Cholnoky
* Navicula vara Hustedt in Schmidt
* Navicula varians Gregory
* Navicula vekhovii Lange-Bertalot & Genkal
* Navicula venerablis Hohn & Hellerman
* Navicula veneta Kützing
* Navicula vilaplanii (Lange-Bertalot & Sabater) Lange-Bertalot & Sabater in Rumrich & al.
* Navicula viminea Hustedt
* Navicula viminoides Giffen
* Navicula viridula (Kützing) Ehrenberg
* Navicula viridulacalcis Lange-Bertalot
* Navicula virihensis Cleve-Euler
* Navicula visitanda Carter
* Navicula vocanica Bahls & Potapova
* Navicula vulpina Kützing
* Navicula walkeri Sovereign
* Navicula wardii Patrick
* Navicula wasmundii Witkowski, Metzeltin & Lange-Bertalot
* Navicula weberi Bahls
* Navicula wellingtonia Cholnoky
* Navicula whitefishensis Bahls
* Navicula wiesneri Lange-Bertalot
* Navicula wiktoriae Witkowski & Lange-Bertalot
* Navicula wildii Lange-Bertalot
* Navicula willisiae Seddon & Witkowski
* Navicula winona Bahls
* Navicula witkowskii Lange-Bertalot, Iserentant & Metzeltin
* Navicula woltereckii Hustedt
* Navicula wunsamiae Witkowski, Lange-Bertalot & Metzeltin
* Navicula wygaschii Lange-Bertalot
* Navicula yorkensis Camburn
* Navicula zanoni Hustedt
* Navicula zeta Cleve
* Navicula zostereti Grunow
Selon World Register of Marine Species (5 mars 2021) :
* Navicula abaujensis Pantocsek, 1889
* Navicula abbottii Cholnoky & Claus, 1961
* Navicula abbreviata Grunow in Cleve & Grunow, 1880
* Navicula abdita Krasske, 1929
* Navicula abducta Manguin, 1952
* Navicula abelioensis Foged, 1966
* Navicula aberantior R.Simonsen, 2012
* Navicula aberrans Cleve-Euler, 1953
* Navicula aberrans Simonsen, 1960
* Navicula abica Carter, 1966
* Navicula abnormalis De Toni, 1891
* Navicula abnormis Castracane, 1886
* Navicula abnormis Grunow in Cleve & Möller, 1878
* Navicula abnormis Grunow, 1880
* Navicula abonuensis Foged, 1966
* Navicula abraensis Foged, 1966
* Navicula abrupta (W.Gregory) Donkin, 1870
* Navicula abruptoides Hustedt, 1964
* Navicula abscondita Hustedt, 1939
* Navicula absoluta Hustedt, 1950
* Navicula abstrusa Hustedt, 1939
* Navicula abuensis Foged, 1966
* Navicula abunda Hustedt, 1955
* Navicula abundoides Cholnoky, 1963
* Navicula abyssinica Grunow, 1886
* Navicula acacia Harting, 1852
* Navicula accedens Hustedt, 1954
* Navicula acceptata Hustedt, 1950 †
* Navicula acceptata sensu Foged, 1962
* Navicula accommoda Hustedt in Messikommer, 1950
* Navicula accomoda sensu Foged, 1958
* Navicula accurata Hustedt, 1950
* Navicula acephala Héribaud, 1903
* Navicula acephala Schoeman, 1973
* Navicula achnanthoides Skvortzow, 1936
* Navicula achnanthoides Østrup, 1902
* Navicula achthera M.H.Hohn & Hellerman, 1963
* Navicula acidobionta Lange-Bertalot in Lange-Bertalot & Krammer, 1989
* Navicula acidobiontica T.Wanatabe, 2004
* Navicula acidophila Cholnoky, 1958
* Navicula acnjnjnjus Ehrenberg, 1835
* Navicula acrosphaeria A.Schmidt, 1875
* Navicula actinota Andrews, 1970
* Navicula acuminata sensu Wolle, 1890
* Navicula acus Cleve in Cleve & Grunow, 1880
* Navicula acuta Bory, 1822
* Navicula acuta Kützing, 1844
* Navicula acuta Meister, 1919
* Navicula acuta Meister, 1934 (1935)
* Navicula acuta Schütt, 1896
* Navicula acuta Skvortzov, 1937
* Navicula acuticuneata D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
* Navicula acuticuneatula D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
* Navicula acutirostris Hustedt, 1944
* Navicula acutissima Hustedt in Schmidt & al., 1934
* Navicula adakensis M.Hein
* Navicula adamata Hustedt, 1952
* Navicula adami Pantocsek, 1902
* Navicula adampeensis Foged, 1966
* Navicula adamsii Cholnoky, 1965
* Navicula addaae Pantocsek, 1903
* Navicula addicta Hustedt, 1966
* Navicula adhaerens Mereschkovsky, 1901
* Navicula admenda M.H.Hohn & Hellerman, 1963
* Navicula admissa Hustedt, 1955
* Navicula adnata Hustedt, 1937
* Navicula adnatoides Cholnoky, 1963
* Navicula adnatus Heiden & Kolbe, 1928
* Navicula adriatica Grunow, 1860
* Navicula adsidua Archibald, 1971
* Navicula adumbrata Cholnoky, 1961
* Navicula adumbrata M.H.Hohn & Hellerman, 1963
* Navicula advena A.Schmidt, 1875
* Navicula adversa Krasske, 1938
* Navicula adversatrix Pantocsek, 1913
* Navicula aedifex Pantocsek, 1913
* Navicula aegyptiaca De Toni, 1891
* Navicula aegyptiaca Zalat
* Navicula aegyptica Salah, 1955
* Navicula aemilia Forti, 1913
* Navicula aemula Grunow
* Navicula aequatorialis Heiden in Heiden & Kolbe, 1928
* Navicula aequinoctialis Montagne, 1850
* Navicula aequorea Hustedt, 1939
* Navicula aerophila Krasske, 1932
* Navicula aestimata Hustedt, 1964
* Navicula aestuarii Brébisson ex Kützing, 1849
* Navicula aestuarii Cleve
* Navicula affinis Ehrenberg, 1843
* Navicula affinis sensu Gregory, 1854
* Navicula affinis sensu W. Smith, 1853
* Navicula affirmata Leuduger-Fortmorel, 1879
* Navicula africana Ehrenberg, 1839
* Navicula africana Hustedt, 1910
* Navicula africana Petit, 1876
* Navicula afroalpina Gasse, 1978
* Navicula agatkae Witkowski
* Navicula agellus Ehrenberg, 1840
* Navicula aggerica E.Reichardt, 1982
* Navicula aggesta Hustedt, 1966
* Navicula aglaos Hohn, 1966
* Navicula agma M.H.Hohn & Hellerman, 1963
* Navicula agmastriata Hohn & Hellerman, 1966
* Navicula agnewii Cholnoky, 1962
* Navicula agnita Hustedt, 1955
* Navicula agnita Hustedt, 1966
* Navicula agrestiformis H.P.Gandhi ex Karthick, 2020
* Navicula agrestis Hustedt, 1936
* Navicula agulhasica Cholnoky, 1959
* Navicula ahmedabadensis VanLandingham, 1975
* Navicula aikenensis Patrick, 1959
* Navicula airdevronsixii D.E. Kellogg, M. Stuiver, T.B. Kellogg & G.H. Denton, 1980
* Navicula aitchelbee L.L.Bahls, 2012
* Navicula ajajensis Skabichevskii, 1936
* Navicula ajenaensis Foged, 1966
* Navicula akebergii
* Navicula aketechiensis Foged, 1966
* Navicula akimensis Foged, 1966
* Navicula aktinoides Skuja, 1937
* Navicula alandica
* Navicula alaskana Patrick & Freese, 1961
* Navicula alata Cleve in Cleve & Moller, 1882
* Navicula albanica Krenner, 1926
* Navicula albinensis Grunow, 1884
* Navicula albinensis sensu Cleve-Euler, 1939
* Navicula alea M.H.Hohn & Hellerman, 1963
* Navicula aleemi Hustedt in Hustedt & Aleem, 1951
* Navicula aleemii Hustedt, 1951
* Navicula aleksandrae Lange-Bertalot, Bogaczewicz-Adamczak & Witkowski, 2003
* Navicula algeriensis Montagne, 1846
* Navicula algida Grunow, 1884
* Navicula algor M.H.Hohn & Hellerman, 1963
* Navicula alineae Lange-Bertalot, 2000
* Navicula allista Hohn & Hellerman, 1966
* Navicula allorgei É.Manguin, 1952
* Navicula alluviana Heiden, 1900
* Navicula alpha Cholnoky, 1955
* Navicula alpha Cleve, 1893
* Navicula alpha Heinzerling, 1908
* Navicula alternans Schumann, 1867
* Navicula alterofasciata Kooijman, 1982
* Navicula altiplanensis U.Rumrich & Lange-Bertalot
* Navicula amabilis Hustedt, 1966
* Navicula ambigua Smith in A. Schmidt, 1897
* Navicula ambigua sensu Pantocsek, 1902
* Navicula americana F.W. Mills, 1934
* Navicula amerinda Carter, 1966
* Navicula amica Cleve & Grunow in Cleve, 1881
* Navicula amici E.M. Nelson, 1910
* Navicula amicii E.M. Nelson, 1911
* Navicula amicii J.W. Bailey, 1851
* Navicula amicorum Grunow
* Navicula ammophila Grunow, 1862
* Navicula amnicola M.H.Hohn & Hellerman, 1963
* Navicula amoena Cleve manuscript in Cleve, 1894
* Navicula amoena Manguin ex Kociolek & Reviers, 1996
* Navicula amoenaeformis Manguin, 1964
* Navicula amphibia Jousé, 1939
* Navicula amphibola Cleve, 1891
* Navicula amphiceropsis Lange-Bertalot & Rumrich, 2000
* Navicula amphilepta Ehrenberg, 1857
* Navicula amphioxys Ehrenberg, 1843
* Navicula amphioxys sensu Kützing, 1844
* Navicula amphioxys sensu Westendorp, 1845-1859
* Navicula amphipleuroides Hustedt, 1955
* Navicula amphirrhina Ehrenberg, 1842
* Navicula amphirynchus sensu Donkin, 1871
* Navicula amphisbaena Bory de Saint Vincent, 1824
* Navicula amphisbaena sensu W. Smith, 1853
* Navicula amphisphenia Ehrenberg, 1843
* Navicula amphora Brun, 1891
* Navicula amphora Ehrenberg, 1832
* Navicula amphoroides O'Meara, 1867
* Navicula amplectens Hustedt in Schmidt & al., 1934
* Navicula amygdalina Hustedt in Schmidt & al., 1936
* Navicula anassae Cholnoky, 1957
* Navicula anatis Hohn & Hellerman, 1963
* Navicula anca J.R.Carter, 1964
* Navicula ancilla Hendey, 1964
* Navicula ancora Weisse in Eichwald, 1844
* Navicula ancyli Fontell in manus. Cleve-Euler, 1953
* Navicula anderabensis Foged, 1959
* Navicula anderssonii Cleve, 1881
* Navicula andesitica Pantocsek, 1889
* Navicula andium Frenguelli, 1942
* Navicula andranokelyna Manguin, 1949
* Navicula andrussowii Pantocsek, 1902
* Navicula anenuta Fusey, 1953
* Navicula angarae D.Metzeltin, M.S.Kulikovskiy & H.Lange-Bertalot, 2012
* Navicula angelica Ralfs, 1861
* Navicula angelorum Cleve
* Navicula angleana Lauby, 1910
* Navicula anglica sensu Donkin, 1871
* Navicula anglophila Lange-Bertalot, 1987
* Navicula angolensis Cholnoky, 1966
* Navicula angulata Quekett, 1848
* Navicula angulosa Gregory, 1856
* Navicula angulosa sensu Cleve-Euler, 1915
* Navicula angusta Grunow, 1860
* Navicula angustata Ehrenberg, 1842
* Navicula angustata Ehrenberg, 1843
* Navicula angustefasciata Østrup, 1920
* Navicula angustissima Hustedt in Schmidt & al., 1934
* Navicula anhuiensis Yang, 1994
* Navicula ankobraensis Foged, 1966
* Navicula anna Hendey, 1973
* Navicula annexa Hustedt, 1966
* Navicula anopaia Cholnoky, 1961
* Navicula antarctica Frenguelli, 1960
* Navicula antarctica Karsten, 1905
* Navicula antediluviana Hustedt, 1955 †
* Navicula anthracis Cleve & Brun in Brun & Tempère, 1889
* Navicula antinitescens M.Peragallo, 1908
* Navicula antiqua Cleve-Euler, 1932
* Navicula antiqua Grunow in Cleve & Möller, 1878
* Navicula antiqua Schmidt ex Cleve & Möller, 1879
* Navicula antiqua Skvortzow, 1937
* Navicula antonii Lange-Bertalot, 2000
* Navicula antonioides Van de Vijver, Jarlman & Lange-Bert., 2010
* Navicula antverpiensis Van de Vijver & Lange-Bert., 2009
* Navicula aoboensis
* Navicula aokebergii Cleve-Euler, 1953
* Navicula aperta Frenguelli, 1923
* Navicula aperta Guermeur, 1954
* Navicula aperta Schumann, 1867
* Navicula apiculata Brébisson, 1854
* Navicula apiculata Cleve-Euler, 1949
* Navicula apiculata sensu Donkin, 1871
* Navicula apiculata sensu Gregory, 1856
* Navicula apiculatoreinhardtii M.B.Edlund & N.Soninkhishig, 2009
* Navicula apis sensu Donkin, 1871
* Navicula apis sensu Schmidt, 1872
* Navicula appendiculata Rabenhorst, 1853
* Navicula appendiculata sensu Pantocsek, 1892
* Navicula applanata Hustedt, 1964
* Navicula applicita Hustedt, 1964
* Navicula applicitoides Hustedt, 1964
* Navicula apposita Hustedt, 1954
* Navicula approximata sensu Hendey, 1958
* Navicula approximatella Hustedt
* Navicula approximatoides Hustedt, 1987
* Navicula apsteinii Pantocsek, 1902
* Navicula apta Hustedt, 1955
* Navicula aquaeductae (Krasske) Krasske, 1925
* Navicula aquaeducti
* Navicula aquaedurae Lange-Bertalot, 1993
* Navicula aquintaniae
* Navicula aquosa Archibald, 1966
* Navicula arabica Grunow ex A.Schmidt, 1875
* Navicula aradina Pantocsek, 1892
* Navicula arata Grunow, 1882 †
* Navicula arata sensu Cleve-Euler in Backman & Cleve-Euler, 1922
* Navicula arata sensu Hustedt, 1937
* Navicula araucaniana Frenguelli, 1934
* Navicula arcana Pantocsek, 1913
* Navicula archeriana O'Meara, 1874
* Navicula archibaldiana Foged, 1975
* Navicula arctica Cleve, 1873
* Navicula arctissima Schmidt
* Navicula arctotenelloides Lange-Bertalot & Metzeltin, 1996
* Navicula arcuata Heiden, 1928
* Navicula arcuata Pantocsek, 1892 †
* Navicula arcus Ehrenberg, 1836
* Navicula ardis Hohn, 1966
* Navicula ardua Mann, 1907
* Navicula arenaria Donkin, 1861
* Navicula arenariaeformis Pantocsek, 1889
* Navicula arenicola Grunow, 1882
* Navicula arenicola sensu Cleve-Euler in Backman & Cleve-Euler, 1922
* Navicula arenosa Lauby, 1909
* Navicula arenula M.H.Hohn & Hellerman, 1963
* Navicula areolata Hustedt, 1952
* Navicula areschougiana Grunow
* Navicula argestris Hustedt, 1937
* Navicula arguens Skvortzow, 1937
* Navicula argunensis Skvortzow, 1938
* Navicula argutiola M.H.Hohn & Hellerman, 1963
* Navicula argutula Hustedt, 1955
* Navicula arida Bock, 1963
* Navicula ariiensis H.Okuno, 1952 †
* Navicula arkona Lange-Bertalot & Witkowski, 2001 †
* Navicula armata J.R.Carter, 1964
* Navicula armoricana Amossé, 1932
* Navicula arraniensis O'Meara, 1875
* Navicula artemidis Cholnoky, 1957
* Navicula artificiosa Heiden in Heiden & Kolbe, 1928
* Navicula arvensiformis Carter, 1970
* Navicula arvensis Hustedt, 1937
* Navicula arvensoides Hustedt, 1945
* Navicula arverna M.Peragallo & Héribaud-Joseph, 1893
* Navicula asanwinsoensis Foged, 1966
* Navicula ascensionensis Van de Vijver, Wilfert, D.M. John & Lange-Bertalot, 2018
* Navicula asellus Weinhold ex Hustedt, 1934
* Navicula ashantiensis Foged, 1966
* Navicula asiatica Meister, 1934 (1935)
* Navicula asklepieionensis Foged, 1982
* Navicula aspeitiaae Pantocsek, 1913
* Navicula aspera Ehrenberg, 1840
* Navicula aspera sensu Donkin, 1872
* Navicula aspera sensu Schmidt in Schmidt & al., 1876
* Navicula aspergilla Carter & Denny, 1992
* Navicula aspersa Hustedt, 1966
* Navicula associata Lange-Bertalot, 2001 †
* Navicula assula Cholnoky, 1963
* Navicula assuloides Giffen, 1973
* Navicula astrolabensis Hendey, 1937
* Navicula astutus Fontell in manus., Cleve-Euler, 1953
* Navicula asymbasia M.H.Hohn & Hellerman, 1963
* Navicula asymetrica Pantocsek, 1892
* Navicula asymmetrica Cleve, 1883
* Navicula atacamae Hustedt, 1927
* Navicula atacamana Patrick, 1961
* Navicula atalos Hohn, 1966
* Navicula atasensis Simonsen, 1987
* Navicula athenae A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
* Navicula atomarius Skvortzow, 1936
* Navicula atomus sensu Boye Petersen, 1915
* Navicula atomus sensu Schumann, 1864
* Navicula attwoodii M. Peragallo in Tempère & Peragallo, 1908
* Navicula atwateri Seddon, Witkowski & Hemphill-Haley, 2011
* Navicula aubertii Héribaud in Héribaud & al., 1920
* Navicula aucklandica Grunow, 1863
* Navicula aueri Krasske, 1949
* Navicula augustissima Hustedt, 1935
* Navicula aulacophaena Ehrenberg, 1854
* Navicula aurangabadensis Sarode & Kamat, 1984
* Navicula aurantiaca Schoeman, 1973
* Navicula auriculata Hustedt, 1944
* Navicula aurora Sovereign, 1958
* Navicula australasiatica Y.Li & Metzeltin iin Li & al., 2020
* Navicula australoceanica A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
* Navicula australomediocris Lange-Bertalot & R.Schmidt, 1990
* Navicula australoshetlandica Van de Vijver, 2011
* Navicula austrocollegarum Lange-Bertalot & R.Voigt, 2001
* Navicula austroshetlandica Carlson, 1913
* Navicula avenacea sensu Pantocsek, 1902
* Navicula avenaceoides H.P.Gandhi, 1964
* Navicula avium (Tiffany, Herwig & Sterrenburg in Sterrenburg & al.) Yuhang Li & Kuidong Xu, 2017
* Navicula avonensis Round, 1966
* Navicula baardsethii Cleve-Euler, 1949
* Navicula baccata Brun in Brun & Tempère, 1889
* Navicula bachmannii Hustedt, 1961
* Navicula bacillifera Pantocsek, 1889
* Navicula bacilliformis Grunow, 1880
* Navicula bacilloides Hustedt, 1945
* Navicula bacillum Ehrenberg, 1839
* Navicula bacillum sensu Gregory, 1856
* Navicula bacterium Frenguelli, 1923
* Navicula bacula M.H.Hohn & Hellerman, 1963
* Navicula baculus Cleve, 1883
* Navicula baddensis Gasse, 1978
* Navicula bahiensis Zimmermann, 1918
* Navicula bahuensoides Foged, 1975
* Navicula bahusiensis sensu Cleve-Euler, 1915
* Navicula bahusiensis sensu Ostrup, 1895
* Navicula baicalcollegarum Kulikovskiy & Lange-Bertalot, 2012
* Navicula baicalconcentrica M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
* Navicula baicalensis Skvortzov & Meyer, 1928
* Navicula baicalirmengardis Kulikovskiy Lange-Bertalot & Metzeltin, 2012
* Navicula baicalofrigidicola D.Metzeltin, M.S.Kulikovskiy & H.Lange-Bertalot, 2012
* Navicula baicalogracilis M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
* Navicula baicaloradiosa Kulikovskiy Lange-Bertalot & Metzeltin, 2012
* Navicula baileyana Grunow ex A.Schmidt, 1874
* Navicula baileyensis Grunow in Cleve & Möller, 1879
* Navicula baileyi Cholnoky, 1968
* Navicula baileyi Ehrenberg
* Navicula bainii Cholnoky, 1962
* Navicula bakiana A.Witkowski & Lange-Bertalot, 2009
* Navicula bakievae Metzeltin, Kulikovskiy & Lange-Bertalot, 2012
* Navicula balatonis Pantocsek, 1902
* Navicula balcanica Hustedt in Schmidt & al., 1934
* Navicula baldjickiensis Heiden, 1905
* Navicula baleyana
* Navicula balliformis Mereschkowsky, 1903
* Navicula baltica Ehrenberg, 1838
* Navicula baltica Grunow in A. Schmidt, 1874
* Navicula bamboiensis Foged, 1966
* Navicula bannajensis Boye Petersen, 1946
* Navicula bansoensis Foged, 1966
* Navicula barbadense Vickers, 1905
* Navicula barbara Heiden, 1928
* Navicula barbarica Hustedt, 1949
* Navicula barberi Hendey, 1964
* Navicula barberiana Foged, 1979
* Navicula barbitos A.Schmidt, 1888
* Navicula barclayana Gregory, 1857
* Navicula barentsii Foged, 1964
* Navicula barkeriana O'Meara, 1875
* Navicula barodensis H.P.Gandhi ex Karthick, 2020
* Navicula barrowiana Patrick & Freese, 1961
* Navicula bartholomei Cleve, 1878
* Navicula basaltaeformis
* Navicula basaltaeproxima J.Brun & Héribaud-Joseph
* Navicula basilica Brun, 1891
* Navicula basilica Pantocsek, 1892
* Navicula bastianii M.Peragallo, 1909
* Navicula bastowii Hustedt, 1955
* Navicula bauemleri Pantocsek
* Navicula bawdiaensis Foged, 1966
* Navicula bdesma Hohn, 1961
* Navicula beaufortiana Hustedt, 1955
* Navicula beccariana Grunow, 1886
* Navicula beckii Pantocsek, 1889
* Navicula beketowii Mereschkowsky, 1902
* Navicula bella Hustedt, 1937
* Navicula bella Karajeva, 1964
* Navicula bellatii Frenguelli, 1953
* Navicula belliatula Archibald, 1971
* Navicula bellissima Hustedt, 1966
* Navicula bendaensis Schrader & Fenner, 1976
* Navicula bengalensis Grunow in Schmidt & al., 1875
* Navicula bergenensis Hohn, 1952
* Navicula bergeni Hohn, 1952
* Navicula bergeri
* Navicula bergii Cleve-Euler, 1953
* Navicula berriati Héribaud-Joseph
* Navicula bertelsenii Foged, 1966
* Navicula bertrandi Lauby, 1910
* Navicula besarensis Giffen, 1980
* Navicula beta Cleve, 1895
* Navicula biaculeata Cleve-Euler, 1949
* Navicula biagnita Simonsen, 1987
* Navicula biakensis Cholnoky, 1963
* Navicula bialbata H. Peragallo & M. Peragallo, 1898
* Navicula biblos Cleve, 1891
* Navicula bicapitata Hajós, 1959
* Navicula bicapitata Heiden & Kolbe, 1928
* Navicula bicapitata Jousé, 1936
* Navicula bicapitata O'Meara, 1875
* Navicula bicapitata sensu G.S. West, 1909
* Navicula bicapitellata Hustedt, 1925
* Navicula bicarinata Ehrenberg
* Navicula bicephala Hustedt, 1952
* Navicula bicephaloides Van de Vijver & Zidarova, 2011
* Navicula biceps Bory, 1827
* Navicula biceps sensu Schmidt in Schmidt & al., 1876
* Navicula biceps sensu Schmidt in Schmidt & al., 1877
* Navicula biclavata Cleve & Grove, 1891
* Navicula biconfusa VanLandingham, 1975
* Navicula biconica Patrick, 1959
* Navicula biconifera Morren, 1835
* Navicula biconstricta Grove & Sturt, 1887
* Navicula biconstricta Grunow, 1878
* Navicula bicontracta sensu Hustedt, 1930
* Navicula bicontracta Østrup, 1902
* Navicula bicuneata Grunow, 1860
* Navicula bicuneolus Metzeltin & Lange-Bertalot, 1998
* Navicula bicurvata De Toni, 1891
* Navicula bicuspidata Cleve & Grunow in Cleve, 1881
* Navicula biddulphioides Hustedt, 1966
* Navicula bidentula J.B.Petersen, 1928
* Navicula bievexa Hohn, 1961
* Navicula bifax Hohn & Hellerman, 1966
* Navicula bifissa Schmidt in Schmidt & al., 1897
* Navicula bifrons Ehrenberg, 1833
* Navicula bifurcatula Hustedt, 1964
* Navicula bigemmata Mann, 1925
* Navicula bigibba J.Y.Chen & H.Z.Zhu
* Navicula biglobosa Schumann, 1867
* Navicula bihastata A.Mann, 1924
* Navicula bilineata Schumann, 1862
* Navicula bilobata Leuduger-Fortmorel, 1879
* Navicula bimaculata Pantocsek, 1889
* Navicula binaria Schmidt in Schmidt & al., 1875
* Navicula binocularis Smejev, 1872
* Navicula binodulosa Sullivan & Reimer, 1975
* Navicula bintila Carter & Denny, 1982
* Navicula binziana T.Marsson, 1900
* Navicula bipatens Heiden, 1906
* Navicula bipectinalis Schumann, 1867
* Navicula bipennata
* Navicula bipodis
* Navicula bipunctata Bory, 1827
* Navicula bipunctata Grunow in Van Heurck, 1880
* Navicula bipunctata O'Meara, 1872
* Navicula bipustulata Mann, 1925
* Navicula birhis Hohn, 1961
* Navicula birostrata Gregory, 1855
* Navicula biscalaris Brebisson in litt., Janisch ex W. Smith, 1856
* Navicula biseriata Brockmann, 1952
* Navicula biseriata Petit, 1877
* Navicula bishti Singh, Nautiyal & Vimal, 1976
* Navicula biskanteri Hustedt, 1939
* Navicula bita Hohn, 1961
* Navicula bitruncata Turpin, 1816-1830
* Navicula bituminosa Pantocsek
* Navicula bjoernoeyaensis D.Metzeltin, A.Witkowski & Lange-Bertalot, 1996
* Navicula blasii Frenguelli, 1938
* Navicula blazencicae Z. Levkov & S. Krstic in Levkov, Krstic, Metzeltin & Nakov, 2007
* Navicula blazenciciae Z.Levkov & S.Krstic, 2007
* Navicula bleischiana Janisch & Rabenhorst, 1863
* Navicula bleischii Janisch in Schmidt & al., 1877
* Navicula blessingii Gran, 1900
* Navicula blotii Héribaud in Héribaud & al., 1920
* Navicula bodosensis Pantocsek
* Navicula boergesenii Østrup, 1913
* Navicula bombiformis Leuduger-Fortmorel, 1892
* Navicula bomboides A.W.F.Schmidt, 1874
* Navicula bombus Donkin, 1872
* Navicula bongrainii M. Peragallo, 1921
* Navicula bonnieri Lauby, 1910
* Navicula borbassii Pantocsek, 1902
* Navicula borgesenii Østrup, 1913
* Navicula borinquensis Hagelstein, 1939
* Navicula boris-skvortzowii M.S.Kulikovskiy, D.Metzeltin & H.Lange-Bertalot, 2012
* Navicula borneoensis Hustedt, 1966
* Navicula borowkae A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
* Navicula borscowii Mereschkowsky, 1902
* Navicula borussica Cleve in Grunow, 1882
* Navicula boryana Pantocsek, 1889
* Navicula boseana Skvortzov
* Navicula bossvikensis S. Busse & P. Snoeijs, 2002
* Navicula bosumtwiensis Foged, 1966
* Navicula botteriana Grunow
* Navicula bottnica Grunow, 1880
* Navicula boudetii M. Peragallo, 1921
* Navicula bouhardi Héribaud, 1902
* Navicula bouillantensis Metzeltin & Lange-Bertalot, 2007
* Navicula bourgi Lauby, 1910
* Navicula bourrellyi Manguin ex Kociolek & Reviers, 1996
* Navicula bourrellyivera Lange-Bertalot, A.Witkowski & K.Stachura, 1998
* Navicula boyei Østrup, 1920
* Navicula bozenae Lange-Bertalot, Witkowski & Zgrundo, 2003
* Navicula brachium Hustedt, 1944
* Navicula brachysira Brébisson ex Rabenhorst, 1853
* Navicula branchiata Mann, 1925
* Navicula brasiliana (Cleve) Cleve, 1894
* Navicula brasiliensis Grunow
* Navicula brauniana Grunow, 1876
* Navicula brebissonii Grunow in Van Heurck
* Navicula brebissonii sensu Lagerstedt, 1873
* Navicula brebissonii sensu Schmidt in Schmidt & al., 1876
* Navicula brehmii Hustedt
* Navicula brehmiodes Hustedt, 1952
* Navicula breitenbuchii Lange-Bertalot, 2001
* Navicula brekkaensoides Bock, 1963
* Navicula bremensis Hustedt, 1957
* Navicula breviata Hustedt, 1966
* Navicula brevirostrata Hustedt in Schmidt & al., 1936
* Navicula brevis Cleve-Euler, 1932
* Navicula brevissima Hustedt, 1937
* Navicula brevistriata Tempère & Peragallo, 1889-1895
* Navicula britannica Hustedt & Aleem, 1951
* Navicula brockmanni
* Navicula broetzii Lange-Bertalot & E.Reichardt, 1996
* Navicula brokenshirei R.F.Bastow, 1954
* Navicula bronislaae I.Kaczmarska, 1976 †
* Navicula bruchii Grunow in Cleve, 1881
* Navicula brunelii Poulin, Hudon & Cardinal, 1982
* Navicula brunii Brun, 1891
* Navicula brunii Cleve-Euler, 1939
* Navicula brunii Pantocsek, 1886
* Navicula bruyanti Lauby, 1910
* Navicula brygidae Lange-Bertalot, A.Witkowski & J.P.Kociolek, 2009
* Navicula bryophila Østrup
* Navicula bryophiloides Manguin, 1962
* Navicula buccella M.H.Hohn & Hellerman, 1963
* Navicula buchansiana Woodhead & Tweed, 1960
* Navicula budayana Pantocsek, 1892
* Navicula budda Skvortzow, 1935
* Navicula budensis Grunow in Van Heurck, 1880
* Navicula buderi Hustedt, 1954
* Navicula buderiformis H.P.Gandhi ex Karthick, 2020
* Navicula bulgariarum H. Lange-Bertalot & D. Metzeltin, 2006
* Navicula bullata Norman in Ralfs in Pritchard, 1861
* Navicula bulloides K.E. Lohman, 1957
* Navicula burcki Reinhold, 1937
* Navicula bushmanorum Cholnoky, 1957
* Navicula butreensis Foged, 1966
* Navicula caddoensis Bond, 1968 †
* Navicula cadeei B.Van de Vijver & C.Cocquyt, 2009
* Navicula cadoi Z.Levkov & S.Krstic, 2007
* Navicula caduca Hustedt, 1942
* Navicula caeca Mann, 1925
* Navicula caenosus J.R.Carter & Bailey-Watts, 1981
* Navicula caerulea O'Meara, 1875
* Navicula calcuttensis Skvortzov
* Navicula caldwellii Bastow, 1960
* Navicula calida Hendey, 1964
* Navicula calignosa Cleve & Grove, 1891
* Navicula calva Østrup, 1913
* Navicula calvata Manguin, 1964
* Navicula camerata Cholnoky, 1966
* Navicula campanile Cholnoky, 1961
* Navicula campbellii M.Peragallo, 1908
* Navicula campbellii Petit, 1877
* Navicula camplanata (Grunow) Cleve, 1883
* Navicula camprocarpa Kützing
* Navicula campylodiscus Grunow
* Navicula campylogramma Ehrenberg, 1853
* Navicula canali-kharicutensis Guiry & Karthick, 2020
* Navicula canaliculata Cleve, 1900
* Navicula canalis R.M.Patrick, 1944
* Navicula canariana Lange-Bertalot, 1993
* Navicula cancellata Donkin, 1872
* Navicula candida Schumann, 1867
* Navicula canoris M.H.Hohn & Hellerman, 1963
* Navicula cantonatii Lange-Bertalot, 2001
* Navicula cantonensis Ehrenberg, 1847
* Navicula capensis M. Peragallo, 1921
* Navicula capillata Giffen, 1980
* Navicula capitata Cleve, 1898
* Navicula capitata Fontell, 1917
* Navicula capitatoradiata Germain, 1981
* Navicula capitellata Cleve-Euler, 1943
* Navicula capitellata Skvortzow, 1935
* Navicula capitive Turpin, 1827
* Navicula capitulata Frenguelli
* Navicula capsa Hohn, 1961
* Navicula capsula Cleve-Euler, 1949
* Navicula caractacus M.H.Hohn & Hellerman, 1963
* Navicula carassius Ehrenberg, 1843
* Navicula carassius sensu Grunow, 1860
* Navicula cardiella Luchini, 1976
* Navicula cardinaliculus (Cleve) Mann
* Navicula cardinalis Ehrenberg, 1841 †
* Navicula carecti Cholnoky, 1960
* Navicula cari Ehrenberg, 1836
* Navicula cari sensu Foged, 1958
* Navicula cariana Jousé, 1939
* Navicula caribaea Schmidt, 1874
* Navicula carinata Ehrenberg, 1840
* Navicula carinifera Grunow, 1874
* Navicula cariocincta Lange-Bertalot apud Tsarenko, Lange-Bertalot, Stupina & Wasser, 2000
* Navicula carlae A.Witkowski, Lange-Bertalot & J.P.Kociolek, 2009
* Navicula carloffii Foged, 1966
* Navicula carminata Hustedt, 1934
* Navicula carniolensis Hustedt, 1945
* Navicula carolinensis Ehrenberg, 1856
* Navicula caroliniae Bahls, 2012
* Navicula caroliniana Patrick, 1959
* Navicula carpathorum Pantocsek
* Navicula carstensenii Foged, 1966
* Navicula carteri Van Landingham, 1975
* Navicula carvajaliana Patrick
* Navicula casei Cholnoky, 1954
* Navicula casertana De Notaris in De Notaris & Baglietto, 1872
* Navicula cassa W. Smith, 1859
* Navicula cassieana Foged, 1979
* Navicula castracanei Grunow in Cleve, 1881
* Navicula catalanogermanica Lange-Bertalot & G.Hofmann, 1993
* Navicula cataracta-rheni Lange-Bertalot, 1993
* Navicula cataractrarum Hustedt, 1955
* Navicula catarinensis Krasske, 1948
* Navicula caterva Hohn & Hellermann, 1963
* Navicula catharinae Ehrenberg, 1854
* Navicula caucasica Ross, 1963
* Navicula caudata Metzeltin, Kulikovskiy & Lange-Bertalot, 2012
* Navicula caupulus Hohn, 1966
* Navicula cavernae Cholnoky, 1957
* Navicula ceciliae Van de Vijver, Jarlman & Lange-Bert., 2010
* Navicula celinei Witkowski, Metzeltin & Lange-Bertalot in Metzeltin & Witkowski, 1996
* Navicula cellesensis Héribaud & M. Peragallo in Héribaud, 1902
* Navicula cendronii Manguin, 1960
* Navicula centrafricana Fusey, 1964
* Navicula centraster Cleve, 1895
* Navicula centropunctata Hustedt, 1966
* Navicula ceratogramma Ehrenberg, 1843
* Navicula ceratostigma Ehrenberg, 1841
* Navicula cerenutia Hohn, 1961
* Navicula ceres Schumann, 1867
* Navicula cerevisia Laslandes & Kociolek in Kociolek & al., 2014
* Navicula cerneutia Hohn, 1961
* Navicula certa Hustedt, 1945
* Navicula certa Meister, 1934 (1935)
* Navicula ceylanensis Leuduger-Fortmorel, 1879
* Navicula ceylanica Skvortzow, 1932
* Navicula ceylonica Skvortzow, 1930
* Navicula chaberti Héribaud, 1903
* Navicula chadwickii Foged, 1966
* Navicula challengeri Grunow, 1880
* Navicula chandolensis H.P.Gandhi, 1964
* Navicula chansiensis Skvortzow, 1935
* Navicula charlattii
* Navicula charlottae Foged, 1951
* Navicula charontis Ehrenberg, 1854
* Navicula chasei Cholnoky, 1954
* Navicula chasmaensis Foged, 1959
* Navicula chasmigera Cholnoky, 1960
* Navicula chaspula Carter & Denny, 1982
* Navicula chassagnei Héribaud in Héribaud & al., 1920
* Navicula chauhanii H.P.Gandhi ex Karthick, 2020
* Navicula cheldonensis R.F.Bastow, 1957
* Navicula chersonensis Meunier, 1910
* Navicula cherubim Ross, 1972
* Navicula chi Cleve, 1895
* Navicula chiarae Lange-Bertalot & S.I.Genkal, 1999
* Navicula chilena Lange-Bertalot, 1996
* Navicula chimmoana O'Meara, 1872
* Navicula chinensis Skvortzow, 1929
* Navicula chingmaiensis Foged, 1972
* Navicula chloridorum Cholnoky, 1968
* Navicula cholnokyana Foged, 1975
* Navicula cholnokyii H.P.Gandhi, 1964
* Navicula cholonokyana Foged, 1975
* Navicula chordata Archibald, 1966
* Navicula chrissiana Cholnoky, 1965
* Navicula chutteri Cholnoky, 1965
* Navicula chyzerii Pantocsek, 1889
* Navicula ciliata Corda, 1835
* Navicula cimex Cholnoky, 1963
* Navicula cincta (Ehrenberg) Ralfs, 1861
* Navicula cincta Pantocsek, 1889
* Navicula cincta Tarnavschi, 1930
* Navicula cincta magna J. Brun, 1901
* Navicula cinctaeformis Hustedt in Schmidt & al., 1936
* Navicula cingens Skvortzov, 1937
* Navicula cingulata Hustedt in Schmidt & al., 1936
* Navicula cingulatoides Cholnoky, 1963
* Navicula cinna M.H.Hohn & Hellerman, 1963
* Navicula cipollae Zanon, 1933
* Navicula circumcincta Grunow in Cleve & Möller, 1879
* Navicula circumnodosa Brun, 1891
* Navicula circumsuta Proschkina-Lavrenko, 1932
* Navicula circumtexta F.Meister ex Hustedt, 1934
* Navicula cistella Greville, 1863
* Navicula citrea Schmidt in Schmidt & al., 1877
* Navicula citriformis Cleve-Euler, 1953
* Navicula citriformis E.G.Lupikina, 1965 †
* Navicula citroides K.E. Lohman, 1957
* Navicula citrus Cleve-Euler, 1939
* Navicula citrus Krasske, 1923
* Navicula clagesii Gerd Moser
* Navicula clancula A.Schmidt, 1875
* Navicula clarensiana Schoeman, 1970
* Navicula claromontensis Héribaud in Héribaud & al., 1920
* Navicula clathrata Østrup, 1895
* Navicula clausa T.Marsson, 1900
* Navicula clausii Grunow ex Kolkwitz & Marsson, 1908
* Navicula clavata Manguin, 1964
* Navicula claviculus Arnott ex Grunow in Van Heurck, 1880
* Navicula clementioides Hustedt, 1944
* Navicula clepsydra Meunier, 1910
* Navicula clepsydra sensu Schmidt in Schmidt & al., 1876
* Navicula clericii Frenguelli, 1923
* Navicula clevei Lagerstedt, 1873
* Navicula cleviana O'Meara, 1876
* Navicula climacospheniae Booth, 1986
* Navicula clipeiformis D.König, 1959
* Navicula cloacina Lange-Bertalot & Bonik, 1976
* Navicula cluthensis Gregory, 1854
* Navicula cluthensoides Hustedt, 1966
* Navicula clypeus Ehrenberg, 1840
* Navicula coarctata Ehrenberg, 1842
* Navicula coarctata Schmidt in Schmidt & al., 1875
* Navicula coccinella Metzeltin, Lange-Bertalot & García-Rodríguez
* Navicula cocconeiformis Schumann, 1863
* Navicula cocconeis Ehrenberg, 1842
* Navicula cocconioides J.R.Carter, 1964
* Navicula coccus Schumann, 1863
* Navicula cochlearis Eichwald, 1844
* Navicula cocooneiformis
* Navicula cocquytae Z. Levkov & T. Nakov in Levkov, Krstic, Metzeltin & Nakov, 2007
* Navicula cocquytiae Z.Levkov & T.Nakov, 2007
* Navicula coei Cholnoky, 1960
* Navicula coerulea O'Meara, 1876
* Navicula coerulescens Marsson, 1900
* Navicula coffeiformis
* Navicula colii Héribaud in Héribaud & al., 1920
* Navicula collersonii D. Roberts & A. McMinn, 1999
* Navicula collisiana O'Meara, 1876
* Navicula columbiana Hustedt, 1966
* Navicula columnaris Ehrenberg
* Navicula comerei Héribaud in Héribaud & al., 1920
* Navicula commixta Brebisson in Brebisson & Godey, 1835
* Navicula commutabilis Hustedt
* Navicula commutata Grunow ex A.Schmidt, 1876
* Navicula comoides (Agardh) H.Peragallo
* Navicula compacta Greville, 1857
* Navicula compar Janisch in Schmidt & al., 1881
* Navicula comperei Coste & Ricard, 1982
* Navicula complanata (Grunow) Grunow, 1880
* Navicula complanata Brun, 1896
* Navicula complanatoides Hustedt, 1987
* Navicula complanatula Hustedt, 1987
* Navicula completa Hustedt, 1961
* Navicula completaoides Foged, 1971
* Navicula compositestriata Jasnitsky
* Navicula compressicauda Schmidt, 1874
* Navicula concamerata Hustedt in Schmidt & al., 1936
* Navicula concava Harting, 1852
* Navicula concava Patrick, 1945
* Navicula concentrica Carter & Bailey-Watts, 1981
* Navicula concinna Hustedt, 1944
* Navicula concordia C.Riaux-Gobin & A.Witkowski, 2010
* Navicula confecta A.Schmidt, 1875
* Navicula confidens Cholnoky, 1963
* Navicula confoederata Pantocsek, 1892
* Navicula confusa Laslandes & Kociolek in Kociolek & al., 2014
* Navicula confusa Manguin, 1949
* Navicula congerana Hagelstein, 1939
* Navicula congolensis Hustedt, 1949
* Navicula congrua Janisch in Schmidt & al., 1881
* Navicula conjugata Turpin, 1828
* Navicula conjuncta Hustedt, 1966
* Navicula consanguinea Cleve, 1895
* Navicula conscensa Cholnoky, 1963
* Navicula consentanea Hustedt, 1939
* Navicula consimilis Schmidt, 1874
* Navicula consimilis sensu Peragallo & Peragallo, 1897
* Navicula consors Schmidt in Schmidt & al., 1876
* Navicula conspersa Ehrenberg, 1854
* Navicula conspersa Pantocsek, 1892
* Navicula conspicua A.W.F.Schmidt, 1876
* Navicula constantini Skabichevskii, 1952
* Navicula constricta (Ehrenberg) Schütt, 1896
* Navicula constricta Grunow, 1860
* Navicula contempta Krasske, 1929
* Navicula contendens Mann, 1925
* Navicula contentaeformis Manguin, 1962
* Navicula contermina Schmidt in Schmidt & al., 1876
* Navicula contigua A.W.F.Schmidt
* Navicula contorta Kitton Ms., Cleve, 1895
* Navicula contortula Sovereign, 1963
* Navicula contracta Ehrenberg, 1842
* Navicula contracta Grunow in A. Schmidt, 1890
* Navicula contraria R.M.Patrick, 1959
* Navicula controversa Mann, 1925
* Navicula conveniens Hustedt, 1952
* Navicula conventus Heiden, 1900
* Navicula convergens Patrick, 1959
* Navicula convexa W.Smith, 1853
* Navicula conveyi Van de Vijver, 2011
* Navicula copiosa A.Schmidt, 1888
* Navicula coquedensis Donkin, 1869
* Navicula coraliana Metzeltin & Lange-Bertalot, 1998
* Navicula corbieri Héribaud, 1903
* Navicula cordillerae Frenguelli, 1942
* Navicula cornubiensis Hendey, 1973
* Navicula corpulenta Mann, 1925
* Navicula correpta Schmidt in Schmidt & al., 1890
* Navicula cortanensis Krasske, 1948
* Navicula cortanensis sensu Cholnoky, 1957
* Navicula corticela Manguin ex Kociolek & Reviers, 1996
* Navicula corticola Manguin, 1962
* Navicula corymbosa (Agardh) Cleve, 1896
* Navicula cosmaria Brebisson ex Kutzing, 1849
* Navicula costata Corda, 1835
* Navicula costei Héribaud-Joseph
* Navicula costuloides Skvortzow, 1937
* Navicula cotiformis Grunow ex Cleve, 1881
* Navicula cotschii Christjuk, 1930
* Navicula crabro sensu Donkin, 1871
* Navicula crabro sensu Greville, 1857
* Navicula crabro sensu Schmidt in Schmidt & al., 1881
* Navicula crabroniformis Grunow in Schmidt & al., 1875
* Navicula crassa Gregory, 1855
* Navicula crassirostris Grunow
* Navicula crassula Naegeli in Kutzing, 1849
* Navicula crassulexigua Reichardt, 1994
* Navicula crateri Patrick, 1970
* Navicula craticularis Frenguelli, 1933
* Navicula craticuloides Li & Metzeltin, 2015
* Navicula craveni Leuduger-Fortmorel, 1879
* Navicula crebra Hustedt, 1964
* Navicula creguti Héribaud & M.Peragallo
* Navicula cremeri Van de Vijver & Zidarova, 2011
* Navicula cremorme Hohn & Hellerman, 1863
* Navicula cremorne M.H.Hohn & Hellerman, 1963
* Navicula crepitacula Carter & Denny, 1982
* Navicula creuzbergensis Krasske, 1927
* Navicula creuzburgensis Krasske, 1927
* Navicula criophila Manguin, 1957
* Navicula criophila Manguin, 1960
* Navicula criophiliforma A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
* Navicula cristata Ehrenberg, 1854
* Navicula cristata Peragallo, 1921
* Navicula cristula Guermeur & Manguin, 1961
* Navicula cristula Hohn, 1961
* Navicula crocodili Cholnoky, 1962
* Navicula cronullensis Wood, 1963
* Navicula crucialis Frenguelli, 1929
* Navicula cruciata Cleve, 1881
* Navicula cruciata Leuduger-Fortmorel, 1879
* Navicula cruciculoides C.Brockmann, 1950
* Navicula crucifera Grunow, 1876
* Navicula crucifera O'Meara, 1876
* Navicula crucifix Tempère & Brun in Brun & Tempère, 1889
* Navicula crucigeriformis Hustedt, 1961
* Navicula crucigeroides Hustedt, 1961
* Navicula crucigerum Wm Smith Van Heurck, 1896
* Navicula crucitina H. Peragallo in Tempère & Peragallo, 1909
* Navicula crux Ehrenberg, 1838
* Navicula cruxmeridionalis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
* Navicula cryophila Manguin, 1957
* Navicula cryophiliforma Witkowski, Riaux-Gobin & Daniszewska-Kowalczyk
* Navicula cryptocefalsa Lange-Bertalot, 1993
* Navicula cryptocephala Kützing, 1844
* Navicula cryptocephala sensu W. Smith, 1853
* Navicula cryptocephaloides Hustedt, 1937
* Navicula cryptofallax Lange-Bertalot & Hofmann, 1993
* Navicula cryptogaster Lowe, 1972
* Navicula cryptolyra Brockmann, 1950
* Navicula cryptorrhynchus Cholnoky, 1963
* Navicula cryptostriata Salah, 1953
* Navicula cryptotenella Lange-Bertalot, 1985
* Navicula cryptotenelloides Lange-Bertalot, 1993
* Navicula crystallina Hustedt, 1961
* Navicula csaszkaae Pantocsek, 1903
* Navicula cubitus Tempère & Brun in Brun & Tempère, 1889
* Navicula cucullus Pantocsek, 1908
* Navicula cumbriensis Haworth, 1988
* Navicula cummerowii Kalbe, 1973
* Navicula cumvibia Hohn & Hellerman, 1966
* Navicula cunctans Schoeman, 1973
* Navicula cuneata O'Meara, 1876
* Navicula cuneatostriolata Kulikovskiy Lange-Bertalot & Metzeltin, 2012
* Navicula cuneicephala D.G.Mann, 1924
* Navicula cuneoquadrata Brun ex Tempère & Peragallo, 1912
* Navicula cunoniae Cholnoky, 1963
* Navicula curiosa Cholnoky, 1965
* Navicula curiosa Hustedt, 1955
* Navicula curta Hustedt, 1937
* Navicula curtestria Pantocsek, 1892
* Navicula curtestriata Pantocsek, 1889
* Navicula curtestriata Østrup, 1918
* Navicula curtisterna Lange-Bertalot, 2001
* Navicula curvilineata Mann, 1907
* Navicula curvinervia Grunow in Cleve, 1878
* Navicula curvipunctata Leuduger-Fortmorel, 1892
* Navicula curviraphis Cleve-Euler, 1953
* Navicula curvula Ehrenberg, 1838
* Navicula curvula sensu Kutzing, 1844
* Navicula cuspidata Otto Müller, 1899
* Navicula cuspidata sensu Frenguelli, 1924
* Navicula cuspidata sensu Schmidt in Schmidt & al., 1897
* Navicula cuspis O'Meara, 1876
* Navicula cuvella Carter & Denny, 1982
* Navicula cyclophora Castracane, 1886
* Navicula cyclops Mann, 1925
* Navicula cymatopleura West & G.S.West, 1911
* Navicula cymbelliformis Cholnoky, 1954
* Navicula cymbelloides Hustedt in Schmidt & al., 1934
* Navicula cymbelloides Jousé, 1952
* Navicula cymbula Donkin, 1869
* Navicula cyprinus (Ehrenberg) Kützing
* Navicula cyprinus (W. Smith) Boyer, 1916
* Navicula czekejazensis Pantocsek, 1889
* Navicula dactylus sensu Tempère & Peragallo, 1911
* Navicula daczii Gaponov, 1915
* Navicula dahomensis Hustedt, 1910
* Navicula dahurica Skabichevskií
* Navicula dahurica Skvortzov, 1937
* Navicula dailyi Reimer, 1961
* Navicula dakariana Guermeur, 1954
* Navicula dalmatica Grunow
* Navicula damasii Hustedt, 1962
* Navicula damongensis Foged, 1966
* Navicula danderiana Guermeur, 1954
* Navicula danensis Stiles, 1918
* Navicula daochengensis W. Zhang, Chudaev & T. Wang in Wang & al., 2020
* Navicula dapaliformis Hustedt, 1966
* Navicula dapalis Frenguelli, 1941
* Navicula dapaloides Frenguelli, 1953
* Navicula dartevellei Kufferath, 1957
* Navicula darwiniana Seddon & Witkowski, 2011
* Navicula davidsoniana O'Meara, 1876
* Navicula de-toniana Gutwinski, 1892
* Navicula dealpina Lange-Bertalot, 1993
* Navicula debegenica Cholnoky, 1954
* Navicula debilis Pantocsek, 1889
* Navicula debilissima Grunow, 1884
* Navicula debilitata M. Peragallo in Héribaud & al., 1920
* Navicula deblockii Héribaud in Héribaud & al., 1920
* Navicula debyi Pantocsek
* Navicula decens Pantocsek, 1913
* Navicula dechambrei Bourrelly & Manguin, 1950
* Navicula decipiens Castracane, 1886
* Navicula decipiens Cleve, 1896
* Navicula decipiens Meister, 1932
* Navicula decipiens O'Meara, 1876
* Navicula decissa Carter, 1966
* Navicula declinata Hustedt, 1966
* Navicula declivis Hustedt, 1934
* Navicula decloitrei Guermeur, 1954
* Navicula decora Grove & Sturt, 1887
* Navicula decrescens Cleve-Euler, 1948
* Navicula decrescens Héribaud-Joseph, 1903
* Navicula decumana Pantocsek, 1892
* Navicula decurrens Cleve, 1883
* Navicula decurrens sensu Grunow in Schmidt & al., 1876
* Navicula decussepunctata Simonsen, 1960
* Navicula decussis Østrup, 1910
* Navicula deficilis
* Navicula definita Grove & Sturt
* Navicula defluens Hustedt, 1944
* Navicula degenii Pantocsek, 1902
* Navicula dehissa Giffen, 1973
* Navicula delastriata Hohn & Hellerman, 1966
* Navicula delata Schmidt, 1874
* Navicula delawarensis Grunow ex Cleve, 1893
* Navicula delecta Meister, 1937
* Navicula deliberata Hustedt, 1961
* Navicula delicata Frenguelli, 1926
* Navicula delicatilineolata H.Kobayasi & S.Mayama, 2003
* Navicula delicatissima Hustedt in Schmidt & al., 1934
* Navicula delicatula Skvortzov, 1937
* Navicula delicatula W. Smith Collection, 1850
* Navicula deliginensis O'Meara, 1876
* Navicula delognei Van Heurck, 1880
* Navicula delpiroui M. Peragallo in Héribaud & al., 1920
* Navicula delta Cleve, 1893
* Navicula deltaica D.E. Kellogg, M. Stuiver, T.B. Kellogg & G.H. Denton, 1980
* Navicula deltoides Hustedt, 1966
* Navicula demerara Grunow, 1893
* Navicula demerarae Ehrenberg, 1845
* Navicula demeraroides Hustedt, 1966
* Navicula demissa Hustedt, 1945
* Navicula demta Schmidt in Schmidt & al., 1881
* Navicula denizotii Manguin, 1964
* Navicula densa Hustedt
* Navicula densepunctata Hustedt, 1962
* Navicula densilineolata (Lange-Bertalot) Lange-Bertalot, 1993
* Navicula densuensis Foged, 1966
* Navicula denticula
* Navicula denticulata O'Meara, 1867
* Navicula denticuloides Hustedt in Schmidt & al., 1934
* Navicula denudata Pantocsek, 1902
* Navicula depauxii M. Peragallo, 1921
* Navicula depressa Cleve, 1891
* Navicula dermochelycola Witkowski, Kociolek & Riaux-Gobin in Riaux-Gobin & al., 2020
* Navicula descripta Hustedt, 1943
* Navicula deserti Forti, 1928
* Navicula destituta Hustedt, 1966
* Navicula destitutiodes Hustedt, 1966
* Navicula destricta Hustedt, 1942
* Navicula detenta Hustedt, 1943
* Navicula detersa Messjatzew, 1922
* Navicula detoniana Gutwinski, 1890
* Navicula dewittiana Kain & Schultze, 1889
* Navicula diabolica Geissler & Gerloff, 1963
* Navicula diaculus Schumann
* Navicula diagonalis Bailey, 1851
* Navicula diahotana Maillard, 1978
* Navicula diaphana Ehrenberg, 1845
* Navicula diaphanea Manguin in Bourrelly & Manguin, 1952
* Navicula dibola Hohn, 1961
* Navicula dibrinatemniskovae R.Zidarova & B.Van de Vijver, 2011
* Navicula dicephala Ehrenberg, 1838
* Navicula dicephala sensu H.L. Smith, 1874-1879
* Navicula dicephaloides Fusey, 1948
* Navicula dicurvata O'Meara, 1872
* Navicula didyma Schmidt in Schmidt & al., 1881
* Navicula didyma sensu Lagerstedt, 1876
* Navicula didyma sensu Neupauer, 1867
* Navicula didyma sensu Schmidt in Schmidt & al., 1881
* Navicula didymus Ehrenberg, 1840
* Navicula diengensis VanLand., 1975
* Navicula differta Pantocsek, 1902
* Navicula difficillima Hustedt, 1950
* Navicula difficillimoides Hustedt, 1957
* Navicula diffluens Schmidt in Schmidt & al., 1874
* Navicula difformis Eichwald, 1847
* Navicula diffusa A.W.F.Schmidt
* Navicula diffusa H. Peragallo, 1888
* Navicula dificilis Pantocsek, 1892
* Navicula digitoconvergens Lange-Bertalot, 1999
* Navicula digitoradiata (Gregory) Ralfs, 1861
* Navicula digitoradiata sensu Cleve-Euler, 1922
* Navicula digitulus Hustedt, 1943
* Navicula digna Hustedt, 1957
* Navicula digrediens Schmidt in Schmidt & al., 1881
* Navicula dilatata Ehrenberg, 1843
* Navicula dilatata sensu Schmidt in Schmidt & al., 1877
* Navicula dilucida Hustedt, 1939
* Navicula dimidiata A.Mayer, 1919
* Navicula dimidiata Dujardin, 1842
* Navicula diploneiformis Hustedt, 1957
* Navicula diploneoides Hustedt, 1936
* Navicula diplosticta Grunow in Schmidt & al., 1875
* Navicula dirhynchus Ehrenberg, 1843
* Navicula dirhynchus sensu Donkin, 1871
* Navicula dirrhombus Schmidt in Schmidt & al., 1875
* Navicula discerneda Cleve-Euler, 1932
* Navicula discernenda Pantocsek, 1889
* Navicula disciformis Peticolas in Vorce, 1889
* Navicula disclusa Hustedt, 1964
* Navicula discrepans Schmidt in Schmidt & al., 1875
* Navicula discreta Hustedt, 1964
* Navicula disculus Schumann, 1862
* Navicula diserta Hustedt, 1939
* Navicula disertoides Cholnoky, 1968
* Navicula disjuncta Hustedt, 1930
* Navicula disjunctoides Manguin ex Kociolek & Reviers, 1996
* Navicula dismutica Hustedt, 1966
* Navicula dispar Schumann, 1862
* Navicula disparata Hustedt, 1942
* Navicula dispensata Hustedt & Manguin
* Navicula dispersa Grove & Sturt, 1887
* Navicula dispersa J.R.Carter, 1964
* Navicula dispersepunctata Hustedt, 1952
* Navicula dispersepunctata Skabichevskii, 1936
* Navicula dispersepunctulata Hustedt, 1966
* Navicula disposita Hustedt, 1964
* Navicula disputans R.M.Patrick, 1959
* Navicula dissimilis W. Smith, 1857
* Navicula dissipata Hustedt, 1944
* Navicula dissipata Salah
* Navicula dissociata E.Reichardt, 1984
* Navicula dissuta Giffen, 1966
* Navicula distantepunctata Simonsen, 1974
* Navicula distauridium Ehrenberg, 1841
* Navicula distenta Schmidt in Schmidt & al., 1874
* Navicula distenta Schumann
* Navicula disticha Schmidt in Schmidt & al., 1897
* Navicula distincta G.S. West, 1907
* Navicula distinctapunctulata Gaud, 1974
* Navicula distinctastriata Hohn & Hellerman, 1963
* Navicula distoma Grunow
* Navicula dithmarsica König ex Hustedt, 1964
* Navicula diuturna Cholnoky, 1962
* Navicula diuturnoides Archibald, 1966
* Navicula divaricata Hustedt, 1942
* Navicula divaricata Manguin in Bourrelly & Manguin, 1952
* Navicula divergens (W.Smith) Grunow, 1860
* Navicula divergentissima Grunow, 1879
* Navicula diversa Greville, 1863
* Navicula diversestriata Jasmitsky, 1936
* Navicula diversicostata Brun, 1894
* Navicula diversipunctata Hustedt, 1944
* Navicula diversistriata Hustedt, 1955
* Navicula diversistriata sensu Foged, 1962
* Navicula diverta Carter, 1966
* Navicula dobrinatemniskovae Zidarova & Van de Vijver, 2011
* Navicula doczii Pantocsek, 1889
* Navicula dodowaensis Foged, 1966
* Navicula doehleri Lange-Bertalot, 2001
* Navicula doellojuradoi Frenguelli, 1924
* Navicula doeringii Frenguelli
* Navicula doljensis Pantocsek, 1886
* Navicula dolomitica W.Bock, 1970
* Navicula dolosa Giffen, 1984
* Navicula dolosa Manguin, 1964
* Navicula domiciliensis E.Reichardt, 2012
* Navicula donkinia O'Meara, 1875
* Navicula donkinii A.Schmidt, 1874
* Navicula donkinii Carruthers in J.E. Gray, 1864
* Navicula dorenbergi Reichelt in Heiden in A. Schmidt, 1903
* Navicula dorenbergii Reichelt, 1899 (1900)
* Navicula dorogostaiskyi Østrup, 1908
* Navicula dosseti Azpeitia, 1911
* Navicula drouetiana Patrick, 1944
* Navicula dubia sensu Schmidt in Schmidt & al., 1877
* Navicula dubiosa de Wildeman, 1897
* Navicula dubitanda Hustedt & Kolbe, 1987 †
* Navicula dubitata Héribaud, 1903
* Navicula dubravicensis Grunow, 1882
* Navicula dugaensis Foged, 1966
* Navicula dulcioides Foged, 1981
* Navicula dulcis Foged, 1971
* Navicula dulcis Krasske, 1939
* Navicula dulcis Patrick, 1959
* Navicula dumontiae Baardseth & Taasen, 1973
* Navicula dunstonii Salah, 1953
* Navicula duomedia Patrick, 1959
* Navicula duplex Nygaard, 1956
* Navicula duplex Pantocsek, 1892
* Navicula duplicata Ehrenberg, 1843
* Navicula duplocapitata Hustedt, 1966
* Navicula durandii sensu Mann, 1925
* Navicula durrandii Kitton, 1885
* Navicula dutoitiana Cholnoky, 1959
* Navicula dvorachekii Ehrlich, 1978
* Navicula dystrophica Patrick, 1959
* Navicula eastwoodi Hanna & Grant, 1926
* Navicula ebor M.H.Hohn & Hellerman, 1963
* Navicula eburnea Zanon, 1941
* Navicula ectoris Van de Vijver, 2002
* Navicula effrenata Krasske, 1949
* Navicula egena Schmidt in Schmidt & al., 1890
* Navicula egeria Pantocsek, 1892
* Navicula egyptiaca Greville, 1866
* Navicula ehrenbergii Kützing, 1844
* Navicula eichhoriaephila Manguin, 1962
* Navicula eichhorniaephila E.Manguin ex Kociolek & Reviers, 1996
* Navicula eidrigeana J.R.Carter, 1979
* Navicula eidrigiana J.R.Carter, 1979
* Navicula ekholmensis Foged, 1964
* Navicula elaborata Hustedt in Schmidt & al., 1934
* Navicula elaphros M.H.Hohn & Hellerman, 1963
* Navicula elata H.P.Gandhi, 1970
* Navicula elata Leuduger-Fortmorel, 1879
* Navicula electa Hustedt, 1966
* Navicula electrolytifuga H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
* Navicula elegans sensu Grunow, 1860
* Navicula elegantissima M. Peragallo in Tempère & Peragallo, 1908
* Navicula elegantissima Meister, 1935
* Navicula elegantula Grunow, 1860
* Navicula elenkinii Goriatscheva, 1963
* Navicula elephantis Cholnoky, 1964
* Navicula elesdiana Pantocsek, 1886
* Navicula elevata Kobayashi, 1968
* Navicula elisabethae Pantocsek, 1909
* Navicula ellips Harting, 1852
* Navicula ellipsis Smith ex Norman, 1860
* Navicula elliptica Ehrenberg, 1844
* Navicula elliptica W.Smith, 1853
* Navicula elmorei Patrick, 1966
* Navicula elongata Ehrenberg, 1856
* Navicula elongata Grunow in Schmidt, 1874
* Navicula elongata Grunow, 1875
* Navicula elongata Poretzky, 1969
* Navicula elongatula Pantocsek, 1889
* Navicula elsoniana Patrick & Freese, 1861
* Navicula emarginata Ehrenberg, 1849
* Navicula emendata Hustedt in Schmidt & al., 1934
* Navicula endophytica Hasle, 1968
* Navicula engelbrechtii Cholnoky, 1955
* Navicula englertiae A.Witkowski, Lange-Bertalot & J.P.Kociolek, 2009
* Navicula enigmatica Germain, 1980
* Navicula ennediensis Compère, 1970
* Navicula entoleia P.Cleve
* Navicula entomon Donkin, 1840
* Navicula entomon sensu Grunow in Schmidt & al., 1875
* Navicula entzii Pantocsek, 1905
* Navicula enucleata Hustedt, 1945
* Navicula eocaenica Schrader, 1969
* Navicula eomenisculus Benson & Kociolek †
* Navicula eponka Hohn, 1961
* Navicula epsilon Cleve, 1893
* Navicula equiornata Manguin in Bourrelly & Manguin, 1954
* Navicula erdmannensis Foged, 1964
* Navicula ergadensis (Gregory) Ralfs, 1861
* Navicula erifuga Lange-Bertalot, 1985
* Navicula ermanii Lupikina, 1984
* Navicula erosa Cleve
* Navicula erythraea Grunow in Schmidt & al., 1875
* Navicula esamangensis Foged, 1966
* Navicula escorialis R.Simonsen, 1959
* Navicula esoculus Schumann
* Navicula esox sensu H.L. Smith, 1874-1879
* Navicula esox sensu Lewis, 1862
* Navicula esromensis Foged, 1968
* Navicula essexii M. Peragallo in Tempère & Peragallo, 1913
* Navicula eta Cleve, 1893
* Navicula eugenia A.Schmidt, 1874
* Navicula eugeniae Cleve, 1881
* Navicula eumontana Messikommer, 1948
* Navicula eunotiiformis Mereschkowsky, 1902
* Navicula europaea Cleve-Euler, 1953
* Navicula euryale Ehrenberg, 1854
* Navicula eurycephala Rabenhorst, 1853
* Navicula eurysoma Ehrenberg, 1838 (1839)
* Navicula euthimius Stone in McLaughlin & Stone, 1986
* Navicula evanida Hustedt, 1942
* Navicula evexa Sovereign, 1963
* Navicula evulsa Giffen, 1967
* Navicula evulsa Østrup, 1895
* Navicula exasperans Kociolek & Reviers, 1996
* Navicula excavata sensu Cleve & Moller, 1878
* Navicula excellens Carlson, 1913
* Navicula excelsa Krasske, 1925
* Navicula excentrica Grunow, 1860
* Navicula excepta VanLandingham, 1975
* Navicula exemta A. Schmidt, 1874
* Navicula exemta A.Schmidt
* Navicula exigua Dujardin, 1842
* Navicula exigua Gregory, 1854
* Navicula exigua Pantocsek, 1902
* Navicula exigua sensu Pantocsek, 1892
* Navicula exiguiformis Hustedt, 1944
* Navicula exiguoides Hustedt, 1955
* Navicula exilior Østrup, 1918 (1920)
* Navicula exilis Grunow
* Navicula exilis Grunow, 1880
* Navicula exilis Kützing, 1844
* Navicula exilissima Grunow, 1880
* Navicula exiloides H.Kobayasi & S.Mayama, 2003
* Navicula eximia (Grunow) Grunow, 1897
* Navicula expecta S.L.VanLandingham, 1975 †
* Navicula expectilis Pantocsek
* Navicula expedita Schmidt in Schmidt & al., 1881
* Navicula expeditionis Frenguelli, 1924
* Navicula explanata Hustedt, 1948
* Navicula expleta A.Schmidt, 1874
* Navicula expleta O'Meara, 1876
* Navicula explicata Hustedt, 1964
* Navicula explicatoides Hustedt, 1964
* Navicula explorata Hustedt, 1966
* Navicula exsul A.Schmidt, 1874
* Navicula extensa Ralfs in Pritchard, 1861
* Navicula extenta W. Smith
* Navicula eymei Coste & Ricard, 1982
* Navicula fabiformis A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
* Navicula faceta Hustedt, 1949
* Navicula facilis Krasske, 1949
* Navicula falaisiensis sensu Boye Petersen, 1915
* Navicula falax Pantocsek, 1903
* Navicula falklandiae Ehrenberg, 1854
* Navicula fallax Cleve, 1894
* Navicula falsalyra Hendey, 1970
* Navicula famelica Castracane, 1889
* Navicula famintzinii Mereschkowsky, 1902
* Navicula faoensis Pankow & Huq, 1979
* Navicula farakulumensis Foged, 1959
* Navicula farcimen Østrup, 1904
* Navicula farta Hustedt, 1966
* Navicula fastuosa Ehrenberg, 1840
* Navicula fatigans Zimmermann, 1918
* Navicula fauta Hustedt, 1954
* Navicula favus Salah, 1953
* Navicula fawumangensis Foged, 1966
* Navicula febigeri Cleve, 1881
* Navicula fenestrella Hustedt, 1955
* Navicula fennoscandica Cleve-Euler in Backman & Cleve-Euler, 1922
* Navicula fenzlii Grunow, 1863
* Navicula ferdinandikoburg Pantocsek, 1912
* Navicula fernandae D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
* Navicula fernandesii Moura, 1963
* Navicula ferrazae Cholnoky, 1968
* Navicula festinans Bory, 1824
* Navicula festiva Krasske, 1925
* Navicula feuerborni Hustedt, 1937
* Navicula feuerbornii Hustedt
* Navicula filarszkyana Pantocsek & Greguss in Greguss, 1913
* Navicula filarszkyi Pantocsek, 1903
* Navicula filholi Soubeiran, 1858
* Navicula filiformis Pantocsek, 1905
* Navicula finitima Hustedt, 1949
* Navicula finitima Janisch, 1888
* Navicula finmarchica (Cleve & Grunow) Cleve, 1895
* Navicula firma Donkin, 1871
* Navicula fischeri A.W.F.Schmidt, 1875
* Navicula fistula A.Schmidt, 1874
* Navicula flabellata Meister, 1932
* Navicula flagellifera Hustedt, 1939
* Navicula flahaulti Lauby, 1910
* Navicula flamma Schmidt in Schmidt & al., 1876
* Navicula flammarionensis Van Landingham, 1975
* Navicula flammula Schmidt in Schmidt & al., 1876
* Navicula flanatica Grunow, 1860
* Navicula flanatica Schmidt in Schmidt in Schmidt & al., 1876
* Navicula flattii Pantocsek, 1892
* Navicula flavasinensis Moghadam, 1969
* Navicula flavasinus Moghadam, 1969
* Navicula flebilis Cholnoky, 1963
* Navicula flexuosa Ehrenberg, 1832
* Navicula florentina Grunow, 1877
* Navicula floridana Cleve, 1881
* Navicula florinae Møller, 1950
* Navicula flotowii Grunow, 1880
* Navicula fluens Hustedt
* Navicula fluitans Brun
* Navicula fluminensis
* Navicula fluminisirtysch Tschistjakov, 1959
* Navicula fluminitica Camburn, 1978
* Navicula fluviae-jenisseyi Skvortzow, 1971
* Navicula fluviatilis Hustedt, 1957
* Navicula foederata Grunow ex Moller, 1881
* Navicula foerarmensis M. Peragallo, 1903
* Navicula fogedii Schoeman in Schoeman & Meaton, 1982
* Navicula foliola Tempère & Brun in Brun & Tempère, 1889
* Navicula folium Ehrenberg, 1840
* Navicula follis Ehrenberg, 1838 †
* Navicula fontana J.Zelazna-Wieczorek & Lange-Bertalot, 2011
* Navicula fontana Żelazna-Wieczorek, Lange-Bertalot, Olszyński & Witkowski, 2020
* Navicula fontelli Cleve-Euler, 1934
* Navicula fonticola Grunow, 1880
* Navicula formenterae Cleve, 1895
* Navicula formicata Krasske, 1939
* Navicula formicina Grunow in Cleve, 1878
* Navicula fortii Pantocsek, 1908
* Navicula fortis (Gregory) Ralfs ex Pritchard, 1861
* Navicula fortis sensu Schmidt in Schmidt & al., 1876
* Navicula fortunata Leuduger-Fortmorel, 1879
* Navicula fossaloides Hustedt, 1957
* Navicula fossilioides Manguin ex Kociolek & Reviers, 1996
* Navicula fossilis Ehrenberg, 1854
* Navicula foveana Peragallo & Peragallo, 1897-1908
* Navicula fracta Hustedt, 1987
* Navicula fragilis (Greville) Heiberg
* Navicula fragilis Skvortzow & Meyer, 1928
* Navicula franciscae O'Meara, 1876
* Navicula franconiana (Reinsch; Rabenhorst) M. Peragallo, 1903
* Navicula frasnensis Fusey, 1848
* Navicula fraudulenta A.Schmidt, 1881
* Navicula freesei Patrick & Freese, 1961
* Navicula frenguelli Reinhold, 1937
* Navicula frequens Van Heurck, 1909
* Navicula frickei Pantocsek, 1902
* Navicula frickei Van Heurck, 1909
* Navicula friesneri Reimer, 1961
* Navicula frigida Grunow, 1880
* Navicula frigida Manguin, 1957
* Navicula frigida Manguin, 1960
* Navicula frigida sensu E. Jorgensen, 1905
* Navicula frigidicola D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
* Navicula frisiae Brockmann, 1914
* Navicula friska Carter, 1966
* Navicula fritschii J.W.G.Lund, 1946
* Navicula fritschii sensu Foged, 1958
* Navicula fromenterae Cleve, 1881
* Navicula frugalis Hustedt, 1957
* Navicula frustuliaeformis Cholnoky, 1960
* Navicula frustuloides Patrick, 1936
* Navicula frustulum Hustedt, 1945
* Navicula fuchsii Pantocsek, 1889
* Navicula fucicola Taasen, 1975
* Navicula fuegiana Frenguelli
* Navicula fuenzalidae Frenguelli, 1938
* Navicula fujianensis Chin & Cheng, 1979
* Navicula fukiensis Skvortzow, 1929
* Navicula fulva Brebisson in Brebisson & Godey, 1835
* Navicula funiculata Mann, 1925
* Navicula furtiva E.Manguin, 1952
* Navicula fusca Donkin, 1870
* Navicula fuscata Schumann, 1867
* Navicula fuscus Bory, 1824
* Navicula fusidium Ehrenberg, 1843
* Navicula fusiformis Ehrenberg, 1830
* Navicula fusiformis sensu Meunier, 1910
* Navicula fusioides Grunow, 1880
* Navicula fusoides Grunow, 1880
* Navicula fusticulus Østrup, 1910
* Navicula fustis Østrup, 1918 (1920)
* Navicula fusus (Ehrenberg) De Toni, 1891
* Navicula fusus (O.F. Müller) Bory, 1827
* Navicula futilis Schmidt in Schmidt & al., 1875
* Navicula gaillonii Bory de Saint-Vincent, 1824
* Navicula gainii M. Peragallo, 1921
* Navicula galapagensis
* Navicula galapagoensis Seddon & Witkowski, 2011
* Navicula galea Brun, 1891
* Navicula galikii (Pantocsek) Cleve, 1889
* Navicula gallapagensis Cleve
* Navicula gallica (W.Smith) Lagerstedt, 1873
* Navicula gallica Manguin, 1943
* Navicula galvagensis O'Meara, 1876
* Navicula gamma Cleve
* Navicula gandhii Meister, 1932
* Navicula gandrupi (Petersen) Krasske, 1938
* Navicula garkeana (Grunow) Cleve, 1894
* Navicula gasilidei Héribaud in Héribaud & al., 1920
* Navicula gastriformis Hustedt in Schmidt & al., 1934
* Navicula gastroides Gregory, 1855
* Navicula gastroides Harting, 1852
* Navicula gastrum sensu Pantocsek, 1902
* Navicula gaufinii Moghadam, 1969
* Navicula gaussii (Heiden) Hustedt
* Navicula gauthieri Amossé
* Navicula gawaniensis Gasse, 1986
* Navicula gebhardi Krasske, 1938
* Navicula geinitzi Bünte
* Navicula geisslerae R. Jahn, 1992
* Navicula geitleri Guermeur & Manguin, 1953
* Navicula geitleri Hustedt, 1937
* Navicula gelida Cleve, 1883
* Navicula gelida Grunow, 1884
* Navicula gemina A. Schmidt, 1875
* Navicula gemina Ehrenberg, 1840
* Navicula geminata Turpin, 1828
* Navicula gemma Ehrenberg, 1840
* Navicula gemmata Greville, 1859
* Navicula gemmatula Cleve, 1885
* Navicula gemmatula Grunow
* Navicula gemmifera R.Simonsen, 1960
* Navicula gendrei Héribaud-Joseph
* Navicula genestoermeri A.Witkowski, H-Lange-Bertalot & J.P.Kociolek, 2009
* Navicula geniculata Germain, 1937
* Navicula genifera Schmidt in Schmidt & al., 1874
* Navicula genovefae Fusey, 1951
* Navicula genuflexa Kützing, 1844
* Navicula genustriata Hustedt, 1942
* Navicula gerloffii Schimanski, 1978
* Navicula germainii Wallace, 1960
* Navicula germanopolonica Witkowski & Lange-Bertalot, 1993
* Navicula geronimensis M. Potapova in Potapova, M. & Charles, D.F., 2004
* Navicula gianfranchii Zanon, 1929
* Navicula gibba Ehrenberg, 1830
* Navicula gibba sensu Donkin, 1872
* Navicula gibba sensu Van Heurck, 1885
* Navicula giebelii Schmidt, 1874
* Navicula gieniaflorentina A.Witkowski, Lange-Bertalot, A.Brzeziska & J.P.Kociolek, 2009
* Navicula gieskesii Cholnoky, 1963
* Navicula giffeniana Foged, 1975
* Navicula gigantea Hustedt, 1961
* Navicula gigantorum Cholnoky, 1960
* Navicula gigas Castracane, 1866
* Navicula gigas sensu Schmidt in Schmidt & al., 1876
* Navicula gigas sensu Tempère & Peragallo, 1911
* Navicula gilva Archibald, 1971
* Navicula giovannettiae Guermeur, 1954
* Navicula giriodi Lauby, 1910
* Navicula girondica Konig, 1959
* Navicula glaberrima West & G.S.West, 1911
* Navicula glabra Østrup, 1918
* Navicula glabrissima Mann, 1925
* Navicula glabriuscula Hustedt
* Navicula glaciei Van Heurck, 1909
* Navicula glangeaudi Lauby, 1910
* Navicula glans Ehrenberg, 1838
* Navicula globiceps Grunow in Cleve & Grunow, 1880
* Navicula globiceps Lagerstedt, 1873
* Navicula globiceps W. & G.S. West, 1911
* Navicula globifera O'Meara, 1876
* Navicula globosa Meister, 1934
* Navicula globosaoides Foged, 1970
* Navicula globulifera Hustedt, 1927
* Navicula globuliferiformis Lange-Bertalot, 1993
* Navicula glomus J.R.Carter, 1981
* Navicula gloriosa Brun
* Navicula gloriosa Cleve-Euler, 1953
* Navicula godfroyi M. Peragallo, 1921
* Navicula goersii Bahls, 1983
* Navicula goesii Cleve, 1878
* Navicula gogorevii Chudaev, Glushchenko, Kulikovskiy & Kociolek in Kulikovskiy & al., 2020
* Navicula gololobovae Chudaev, 2016
* Navicula gomontiana Héribaud, 1902
* Navicula gomphonemacea Grunow in Van Heurck, 1880
* Navicula gomphonemacea Østrup in Héribaud & al., 1920
* Navicula gomphonemoides Østrup, 1910
* Navicula gondwana Lange-Bertalot, 1993
* Navicula gongii Metzeltin & Li, 2015
* Navicula gonzalvesiana Gandhi, 1955
* Navicula gorjanovicii Pantocsek, 1886
* Navicula gotlandica
* Navicula gottlandica Grunow, 1880
* Navicula goulainensis Amossé, 1975
* Navicula gourdonii M. Peragallo, 1921
* Navicula gouwsii Cholnoky, 1953
* Navicula gracilis Lauby, 1910 †
* Navicula graciloides A.Mayer, 1919
* Navicula gradata Hustedt in Schmidt & al., 1936
* Navicula gradatoides Cholnoky, 1966
* Navicula graeffii Grunow ex A.Schmidt, 1875
* Navicula gralana Carter & Denny, 1982
* Navicula grammatostoma Ehrenberg, 1841 †
* Navicula grammitis Bory, 1831
* Navicula grammitis Turpin, 1827
* Navicula granii Pantocsek, 1908
* Navicula granoryza Giffen, 1966
* Navicula granulata Bailey, 1854
* Navicula granulata Brébisson in Gregory, 1855
* Navicula granulata Ehrenberg, 1836
* Navicula granulata sensu Schmidt in Schmidt & al., 1875
* Navicula granulifera Skvortzow, 1937
* Navicula granum Schumann, 1867
* Navicula granumavenae Schumann, 1867
* Navicula grasmueckii Lange-Bertalot, 1993
* Navicula grata Pantocsek, 1889
* Navicula gratissima Hustedt, 1944
* Navicula gravistriata R.M.Patrick, 1959
* Navicula gregalis Cholnoky, 1963
* Navicula gregaria Donkin, 1861
* Navicula gregarioides Cholnoky
* Navicula gregoriana Greville, 1857
* Navicula gregoriana O'Meara, 1874
* Navicula gregorii O'Meara, 1875
* Navicula gregorii Ralfs ex Pritchard, 1861
* Navicula gretharum Simonsen, 1974
* Navicula grevilleana Hendey, 1964
* Navicula grevillei (Agardh) Heiberg, 1863
* Navicula grevillei Donkin, 1871
* Navicula grevilleoides Hustedt, 1962
* Navicula griffithii M. Peragallo in Tempère & Peragallo, 1909
* Navicula grimmii Krasske
* Navicula grimmioides Cholnoky, 1963
* Navicula grippii Simonsen., 1966
* Navicula groenlandica Cleve, 1881
* Navicula groschopfi Hustedt, 1939
* Navicula groschopfii Hustedt, 1939
* Navicula grossepunctata Hustedt, 1944
* Navicula grovei Cleve, 1893
* Navicula grovei Meister, 1932
* Navicula groveoides Hustedt, 1966
* Navicula grudeensis Foged, 1970
* Navicula gruendleri (Cleve & Grunow) Cleve
* Navicula gruendleri Schmidt, 1873
* Navicula grundleri
* Navicula grundleriana O'Meara, 1876
* Navicula grundtvigii Foged, 1966
* Navicula grunowiana De Toni, 1891
* Navicula grunowii O'Meara, 1876
* Navicula grunowii Rabenhorst
* Navicula guadalupensis Manguin in Bourrelly & Manguin, 1952
* Navicula guarujana Zimmermann, 1918
* Navicula guaynaboensis Hagelstein, 1939
* Navicula guayqueriae Frenguelli, 1934
* Navicula guetharyana Fusey, 1953
* Navicula guihotii Amossé, 1969
* Navicula guinardiana Brun in Brun & Tempère, 1889
* Navicula gujaratensis Guiry & Karthick, 2020
* Navicula guluensis Giffen, 1963
* Navicula gurovii Pantocsek, 1892 †
* Navicula guttata Grunow, 1880
* Navicula guttulifera Rabenhorst, 1853
* Navicula gutvinskii Pantocsek, 1892
* Navicula gyrinida Mann, 1907
* Navicula gysingensis Foged, 1952
* Navicula gálikii Pantocsek, 1889
* Navicula h Karsten, 1899
* Navicula h-album Cleve, 1894
* Navicula habena M.H.Hohn & Hellerman, 1963
* Navicula habita Hustedt, 1952
* Navicula habitata W. Smith, 1859
* Navicula hachiroensis H. Kobayasi in Kobayasi & al., 1977
* Navicula hagelsteinii Hustedt, 1962
* Navicula hahni Petit
* Navicula haitiana
* Navicula hajosii Pantocsek, 1909
* Navicula halinae A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
* Navicula halionata Pantocsek
* Navicula halophilioides Hustedt, 1959
* Navicula halophiloides Hustedt, 1959
* Navicula hambergi Hustedt, 1924
* Navicula hamiltonii A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
* Navicula hamulifera Grunow, 1880
* Navicula hancockii Schoeman in Schoeman & Meaton, 1982
* Navicula hangchowensis Skvortzow, 1937
* Navicula hankae Skvortzow, 1929
* Navicula hanseatica Lange-Bertalot & Stachura, 1998
* Navicula hanseni Möller, 1950
* Navicula hanseniana Lee & Reimer, 1984
* Navicula hantkenii Pantocsek, 1889
* Navicula haradaae Pantocsek, 1892
* Navicula harbinensis Skvortzow, 1937
* Navicula harderi Hustedt, 1949
* Navicula hariola Cholnoky, 1966
* Navicula harmoniae L.L.Bahls, 2014
* Navicula harpa Ehrenberg, 1846
* Navicula harrisoniana Cholnoky, 1959
* Navicula hartii Cholnoky, 1963
* Navicula hartzii Foged, 1962
* Navicula hassiaca Krasske, 1925
* Navicula hasta Pantocsek, 1892
* Navicula hastaeformis Cholnoky, 1960
* Navicula hastata Jurilj, 1954 †
* Navicula hastatula Lange-Bertalot & Miho, 2001
* Navicula hauckii Cleve, 1881
* Navicula haueri Grunow
* Navicula hawaiiensis Johansen in Rushforth, Kaczmarska & Johansen, 1984
* Navicula haynaldii Pantocsek, 1889
* Navicula haytiana Truan y Luard & Witt, 1888
* Navicula hazslinsky
* Navicula hazslinszkyi Pantocsek, 1889
* Navicula hebetata W. Smith, 1859
* Navicula hebridensis Gregory
* Navicula hecateia Cholnoky, 1965
* Navicula hedini Hustedt, 1922
* Navicula heeri Pantocsek
* Navicula heerii Pantocsek, 1889
* Navicula heidenii (Heiden) Simonsen, 1992
* Navicula heilprinensis Foged, 1955
* Navicula heimansii van Dam & Kooyman, 1982
* Navicula heimansioides Lange-Bertalot, 1993
* Navicula heimii Manguin
* Navicula helea Frenguelli, 1933
* Navicula helensis Schulz, 1926
* Navicula helensoides Archibald, 1966
* Navicula helmandensis Foged, 1959
* Navicula helminae Heiden
* Navicula hemilyrata Missuna, 1914
* Navicula hemiptera sensu Schmidt in Schmidt & al., 1876
* Navicula hemiviridula M. Peragallo in Héribaud & al., 1920
* Navicula henckeli Skvortzow & Meyer, 1928
* Navicula hennedii Janisch, 1862
* Navicula hennedyella Hustedt, 1987
* Navicula hennedyi W.Smith, 1856
* Navicula hennedyi sensu Witt, 1885
* Navicula hennedyii
* Navicula hennedyoides Hustedt, 1964
* Navicula henriquesii Zimmermann, 1917
* Navicula herbstiae Metzeltin & Lange-Bertalot, 1998
* Navicula heribaudi M.Peragallo
* Navicula heroina A.W.F.Schmidt, 1876
* Navicula herrmanii Reichelt in Cleve, 1894
* Navicula hetero-punctata Chin & Cheng, 1979
* Navicula heteroflexa Pantocsek
* Navicula heterostauron Germain, 1937
* Navicula heterosticha Yartseva, 1960
* Navicula heterostriata Fusey, 1948
* Navicula heterovalvata R.Simonsen, 2012
* Navicula heufleri Grunow, 1860
* Navicula hevesensis Pantocsek, 1889
* Navicula heviziana Gallik, 1935
* Navicula hexapla A.W.F.Schmidt, 1877
* Navicula hibernica O'Meara, 1875
* Navicula hibschii Reichelt collection, 1900
* Navicula higleri A.Witkowski & Lange-Bertalot, 2009
* Navicula hilarula Pantocsek, 1892
* Navicula hilliardii Manguin ex Kociolek & Reviers, 1996
* Navicula hintzii Lange-Bertalot, 1993
* Navicula hippodontafallax Witkowski & Ch.Li in Witkowski & al., 2016
* Navicula hippodontaformis A. Witkowski, C. Riaux-Gobin & G. Daniszewska-Kowalczyk, 2010
* Navicula hirudo Rabenhorst, 1864
* Navicula hochstetteri Grunow, 1863
* Navicula hochstetteriana Grunow, 1867
* Navicula hodgeana Patrick & Freese, 1961
* Navicula hoefleri Cholnoky & Schindler
* Navicula hoevsgoelreinhardtii M.B.Edlund & N.Soninkhishing, 2009
* Navicula hoffmannii Pantocsek, 1889
* Navicula hofmanniae Lange-Bertalot, 1993
* Navicula hohnii VanLandingham, 1975
* Navicula hollandica Cholnoky, 1963
* Navicula hollerupensis Foged, 1962
* Navicula holmenii N.Foged, 1955
* Navicula holmiensis Cleve, 1881
* Navicula holstii Cleve, 1881
* Navicula holubyi Pantocsek, 1886
* Navicula homburgiana Hustedt, 1966
* Navicula honesta Fontell in Man., Cleve-Euler, 1953
* Navicula hongkongensis Skvortzov, 1975
* Navicula hordeiformis Pantocsek, 1889
* Navicula hornigii Pantocsek, 1892
* Navicula horstii D. Metzeltin in D. Metzeltin & H. Lange-Bertalot, 2002
* Navicula horvathii Grunow, 1860
* Navicula hospes Schmidt in Schmidt & al., 1875
* Navicula hovassei Manguin, 1954
* Navicula hudsonis Grunow, 1891
* Navicula huei
* Navicula hugenottarum Cholnoky, 1959
* Navicula humboldtiana H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
* Navicula humilis Donkin, 1872
* Navicula humjibreensis Foged, 1966
* Navicula hummii Hustedt, 1955
* Navicula hunanensis J.Y.Chen & H.Z.Zhu
* Navicula huniensis Foged, 1966
* Navicula hustedtiana Simonsen, 1959
* Navicula hustedtii Krasske, 1923
* Navicula hustedtii sensu Foged, 1958
* Navicula hyalina Hajós, 1968
* Navicula hyalinula De Toni, 1891
* Navicula hyalosira Cleve, 1891
* Navicula hyalosirella Hustedt, 1987
* Navicula hybrida M. Peragallo & Héribaud in Héribaud, 1893
* Navicula hyperborea Grunow, 1860
* Navicula hypothetica
* Navicula hyrtlii Pantocsek
* Navicula iasnitskii Skvortzow & Meyer, 1928
* Navicula iberica Azpeitia, 1911
* Navicula ignobilis Krasske, 1938
* Navicula ignobilis Pantocsek, 1889
* Navicula ignorata Schimanski, 1978
* Navicula ignorata Skvortzov, 2012
* Navicula ignota Krasske, 1932
* Navicula ikarii
* Navicula illicita Manguin ex Kociolek & Reviers, 1996
* Navicula illinoensis Ehrenberg, 1854
* Navicula illustra Pantocsek
* Navicula illustrioides Hustedt, 1964
* Navicula illustris Krasske, 1951
* Navicula ilopangoensis Hustedt, 1956
* Navicula imbecilla Cholnoky, 1959
* Navicula imbellis M.H.Hohn & Hellerman, 1963
* Navicula imbricata Bock, 1962
* Navicula imitans A.Mann, 1925
* Navicula impangenica Cholnoky, 1968
* Navicula impercepta Hustedt, 1964
* Navicula imperfecta Cleve, 1883
* Navicula imperialis (Ehrenberg) Kützing, 1849
* Navicula impertila Hohn & Hellerman, 1966
* Navicula impexa Hustedt, 1961
* Navicula implana Hustedt, 1964
* Navicula impleta Cleve & Grove, 1891
* Navicula importuna Hustedt, 1942
* Navicula impressa Grunow in Schmidt & al., 1875
* Navicula impressa Lagerstedt in A. Schmidt, 1876
* Navicula inaequalis Crouan fr. in Schramm & Mazé, 1865
* Navicula inaequalis Crouan fr. in Schramm & Mazé, 1866
* Navicula inaequalis Ehrenberg, 1836 †
* Navicula inaequilatera Lagerstedt, 1873
* Navicula inaequistriata Rattray, 1887 (1888)
* Navicula inattingens R.Simonsen, 1959
* Navicula inaurata Hendey, 1958
* Navicula incarum U.Rumrich & Lange-Bertalot
* Navicula incerta Ehrenberg, 1837
* Navicula incertata Lange-Bertalot, 1985
* Navicula incisa Meister, 1932
* Navicula incisa O'Meara, 1876
* Navicula inclementis Hendey, 1964
* Navicula inclinata Hustedt, 1945
* Navicula includens Pantocsek, 1892
* Navicula incoacta Hustedt, 1987
* Navicula incognita Krasske, 1932
* Navicula incomitatus M.H.Hohn & Hellerman, 1963
* Navicula incomperta Lewis
* Navicula incomposita Hagelstein
* Navicula incompta Krasske, 1932
* Navicula incongruens Hendey, 1977
* Navicula inconspicua Gregory, 1857
* Navicula incudiformis Grunow in Cleve, 1883
* Navicula inculta Manguin, 1964
* Navicula inculta Pantocsek, 1892
* Navicula incurva
* Navicula incurvata Gregory, 1856
* Navicula incus Grunow, 1876
* Navicula indefinita M. Peragallo in Tempère & Peragallo, 1908
* Navicula indemnis M.H.Hohn & Hellerman, 1963
* Navicula index Tempère & Brun in Brun & Tempère, 1889
* Navicula indianensis Reimer, 1961
* Navicula indica Ehrenberg, 1845
* Navicula indicatrix VanLandingham, 1975
* Navicula indifferens Hustedt, 1942
* Navicula indigens Mann, 1925
* Navicula indu Skvortzov, 2012
* Navicula inducens Cholnoky, 1963
* Navicula indulgens Simonsen, 1959
* Navicula inelegans Grove & Sturt, 1887
* Navicula inexacta A. Mann, 1925
* Navicula inexpectans J.R.Carter, 1964
* Navicula inexplorata Krasske, 1939
* Navicula inexspectans Carter, 1964
* Navicula infaceta Cholnoky, 1959
* Navicula infirma Grunow, 1882
* Navicula infirma Manguin, 1941
* Navicula infirmata Hustedt & Manguin in Rabenhorst, 1962
* Navicula inflasa Rabenhorst, 1859
* Navicula inflata Donkin, 1870
* Navicula inflata Gandhi, 1970
* Navicula inflata Grunow in Cleve & Möller, 1879
* Navicula inflatoides H.P. Gandhi, 1998
* Navicula inflexa (Gregory) Ralfs, 1861
* Navicula informe Grunow
* Navicula infossa Laslandes & Kociolek in Kociolek & al., 2014
* Navicula infrenis M.H.Hohn & Hellerman, 1963
* Navicula ingapirca H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
* Navicula ingens Mann, 1925
* Navicula ingenua Hustedt, 1957
* Navicula ingoldii Foged, 1966
* Navicula ingrata Krasske, 1938
* Navicula ingstadii Foged, 1964
* Navicula ingustata Cholnoky, 1962
* Navicula iniqua Krasske, 1932
* Navicula injusta Simonsen, 1959
* Navicula innommata Leuduger-Fortmorel, 1892
* Navicula inornata Grunow, 1880
* Navicula inpossibilis Cholnoky, 1966
* Navicula inpunctata Cholnoky, 1957
* Navicula inquisitor Cholnoky, 1968
* Navicula inscendens Pantocsek, 1905
* Navicula inscriptura Hendey, 1977
* Navicula insepta Carter & Denny, 1982
* Navicula insequens Hustedt, 1955
* Navicula inseriata Hajós, 1968
* Navicula insignificans Mann, 1925
* Navicula insignis Pantocsek, 1889
* Navicula insignita Hustedt, 1942
* Navicula insociabilis sensu Hustedt in Schmidt & al., 1934
* Navicula insolata Loseva, 1983
* Navicula insolita É.Manguin ex J.P.Kociolek & B.de Reviers, 1996
* Navicula insolubilis Cholnoky, 1963
* Navicula insularis Cleve-Euler, 1953
* Navicula insularis Ehrenberg, 1841
* Navicula insulsa Manguin, 1952
* Navicula insulsa Metzeltin & Lange-Bertalot, 1998
* Navicula insuta Manguin, 1960
* Navicula intacta Pantocsek, 1902
* Navicula intercedens Schmidt in Schmidt & al., 1890
* Navicula interglacialis Hustedt, 1944
* Navicula interlineata Grove & Sturt, 1886
* Navicula intermedia (Grunow in Schmidt & al.) Mann, 1907
* Navicula intermixta Hustedt, 1966
* Navicula interposita Lewis, 1865
* Navicula interrupta Hustedt & Ehrenberg in Ehrenberg
* Navicula interrupta Marsson, 1900
* Navicula interruptestriata Simonsen in Schwabe & Simonsen, 1961
* Navicula interversa Peragallo & Peragallo, 1911
* Navicula intestinalis Lange-Bertalot & A.Witkowski, 2009
* Navicula intractata Hustedt, 1961
* Navicula intricata Karajeva, 1963
* Navicula inutilis Krasske, 1949
* Navicula invenusta Mann, 1907
* Navicula inversa Ehrenberg, 1840
* Navicula investigata Heiden, 1905
* Navicula invicta Hustedt in Schmidt & al., 1936
* Navicula invisitata Heiden in Schmidt & al., 1905
* Navicula involata Carter & Denny, 1982
* Navicula involuta Mayer, 1919
* Navicula iota Cleve, 1894
* Navicula iranensis Hustedt, 1962
* Navicula irata Krasske, 1932
* Navicula ireneae Van de Vijver, Jarlman & Lange-Bert., 2010
* Navicula iridescens Mann, 1925
* Navicula irmengardis Lange-Bertalot, 1996
* Navicula irminae A. Witkowski, C. Riaux-Gobin & G. Daniszewska-Kowalczyk, 2010
* Navicula irminiae A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
* Navicula irregularis Gasse, 1975
* Navicula irregularis Pantocsek, 1889
* Navicula irreversa Cholnoky, 1965
* Navicula irritans Cholnoky, 1959
* Navicula irritans Simonsen, 1959
* Navicula irrorata sensu Schmidt in Schmidt & al., 1874
* Navicula isabelensiformis Seddon & Witkowski, 2011
* Navicula isabelensiminor Seddon & Witkowski, 2011
* Navicula isabelensis Seddon & Witkowski, 2011
* Navicula isabelensoides Seddon & Witkowski, 2011
* Navicula iserentantii Lange-Bertalot & Witkowski, 2000 †
* Navicula isertii Foged, 1966
* Navicula islandica Grunow in Cleve & Möller, 1879
* Navicula islandica Østrup, 1918
* Navicula isolata K.E. Lohman, 1957
* Navicula isolita Manguin, 1960
* Navicula isostauron Ehrenberg, 1841
* Navicula iversenii Foged, 1962
* Navicula ivigtutensis Foged, 1953
* Navicula izsopallagae Heiden in Schmidt & al., 1905
* Navicula jaagi
* Navicula jacksoni Schrader, 1969
* Navicula jacobii Manguin in Bourrelly & Manguin, 1952
* Navicula jacotiae Schoeman, 1970
* Navicula jacuda Pantocsek, 1902
* Navicula jaernefelti Hustedt in Schmidt & al., 1936
* Navicula jaernefeltii Hustedt, 1942
* Navicula jaernefeltioides Ricard, 1975
* Navicula jakhalsensis VanLandingham, 1975
* Navicula jakkalsica Cholnoky, 1955
* Navicula jakovljevici Hustedt, 1945
* Navicula jamaicensis Greville
* Navicula janischiana Rabenhorst in Janisch & Rabenhorst, 1862
* Navicula janischii Castracane, 1886
* Navicula japonica Heiden, 1903
* Navicula jarnefelti
* Navicula jarrensis
* Navicula jasnitskii
* Navicula jatobensis Krasske
* Navicula javanenesis Leuduger-Fortmorel, 1892
* Navicula javanica Grunow, 1867
* Navicula jeffreyi Hallegraeff & Burford, 1996
* Navicula jejuna A.W.F.Schmidt
* Navicula jejunoides Van Heurck
* Navicula jelineckiana
* Navicula jelinekiana Grunow, 1867
* Navicula jennerii W.Smith, 1853
* Navicula jentzschii Grunow, 1882
* Navicula jequitinhonhae Zimmermann, 1919
* Navicula jessenii Foged, 1962
* Navicula jimboi Pantocsek, 1892
* Navicula jkarii Skvortzow, 1929
* Navicula jogensis H.P. Gandhi, 1996
* Navicula johanrossii Giffen, 1967
* Navicula johnsoniana Greville, 1863
* Navicula johnsonii (W.Smith) O'Meara, 1876
* Navicula jonssoni Østrup, 1918
* Navicula jordani Ehrenberg, 1854
* Navicula josephi Pantocsek, 1902
* Navicula josephinorum Zanon, 1928
* Navicula jota
* Navicula joubaudii H.Germain, 1982
* Navicula joursacensis Héribaud, 1903
* Navicula jouseana Skvortzow, 1971
* Navicula juanitalinda D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
* Navicula jucuda Cleve-Euler, 1948
* Navicula jucuda Pantocsek, 1902
* Navicula jugata Cleve, 1881
* Navicula jugifera Hustedt in Schmidt & al., 1936
* Navicula julieni Héribaud & Brun in Héribaud, 1893
* Navicula jungii Krasske
* Navicula jurassensis Fusey, 1948
* Navicula jurgensii Kützing, 1844
* Navicula jurilji Hajós, 1968
* Navicula justa Hustedt, 1955
* Navicula juvenis (Ehrenberg) F.W. Mills, 1934
* Navicula kaapensis Cholnoky, 1955
* Navicula kaelfvensis Grunow Ms. in Cleve, 1894
* Navicula kaikonkiensis Woodhead & Tweed, 1960
* Navicula kalganica Skvortzow, 1935
* Navicula kamorthensis Grunow, 1863
* Navicula kamorthensis Schmidt in Schmidt & al., 1875
* Navicula kanemi Iltis, 1971
* Navicula kanitzii Pantocsek, 1892
* Navicula kantsiensis Giffen, 1967
* Navicula kappa Cleve, 1894
* Navicula karelia (Cleve) M. Peragallo, 1903
* Navicula karelica Cleve-Euler
* Navicula kariana Grunow in Cleve & Grunow, 1880
* Navicula kariana Meunier, 1910
* Navicula karsia Hohn, 1961
* Navicula karstenii Pantocsek, 1902
* Navicula karyokonites Cleve, 1883
* Navicula kawamurae Skvortzow, 1936
* Navicula keeleyi Patrick, 1945
* Navicula kefvingensis sensu Pantocsek, 1902
* Navicula kelleri Pantocsek, 1889
* Navicula kenaiensis McLaughlin & Stone, 1976
* Navicula kenaiensis Stone in McLaughlin & Stone, 1986
* Navicula kenon Skvortzow, 1938
* Navicula kenyae Cholnoky, 1960
* Navicula kepesii Grunow, 1884
* Navicula kerguelenensis Castracane, 1886
* Navicula kerguelensis Heiden
* Navicula kernensis Hanna, 1932
* Navicula kertschiana Pantocsek, 1902
* Navicula khentiiensis D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
* Navicula kincaidii Sovereign, 1963
* Navicula kinkeriana Pantocsek, 1892
* Navicula kinkerii Pantocsek, 1889
* Navicula kirchenpauerii De Toni, 1891
* Navicula kirchneriana Florin, 1970
* Navicula kisber M.H.Hohn & Hellerman, 1963
* Navicula kittoniana O'Meara, 1875
* Navicula kittoniana Schmidt in Schmidt & al., 1874
* Navicula kizakensis Skvortzow, 1936
* Navicula kjellmanii (Cleve) Cleve
* Navicula klavsenii Østrup
* Navicula kleerekoperi Patrick, 1944
* Navicula knysnensis Cholnoky, 1956
* Navicula kochii Pantocsek, 1889
* Navicula koeiei Foged, 1959
* Navicula koenigi Brockmann, 1950
* Navicula kohlenbachii H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
* Navicula kohlmaieri Lange-Bertalot, 1998
* Navicula kolbei Meister, 1932
* Navicula kolbei Poretzky & Anissimova, 1933
* Navicula kolentiensis Woodhead & Tweed, 1960
* Navicula kolugoensis Foged, 1966
* Navicula komarovii Poretzky, 1940
* Navicula kongsfjordensis Stachura & al., 2015
* Navicula koniamboensis Manguin ex Kociolek & Reviers, 1996
* Navicula konstantini Skabichevskií, 1952
* Navicula koreana Skvortzow, 1936
* Navicula korzeniewskii A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
* Navicula koslowii Pantocsek, 1913
* Navicula kossuthii Pantocsek, 1886
* Navicula kotschyana Grunow in Cleve & Grunow, 1880
* Navicula kovalchookiana Skvortzow, 1937
* Navicula kozlowii
* Navicula kpongensis Foged, 1966
* Navicula kraeuselii Cholnoky, 1954
* Navicula krammeriae Lange-Bertalot in Lange-Bertalot & Metzeltin, 1996
* Navicula krasskei Hustedt, 1930
* Navicula krenneri Z.Levkov, M.B.Edlund & T.Nakov, 2008 †
* Navicula kriegeri Krasske, 1943
* Navicula krockii Grunow, 1882
* Navicula krsticii Z.Levkov, 2007
* Navicula kryokonites Cleve
* Navicula kryophila Cleve, 1883
* Navicula kuelbsii Lange-Bertalot, 1985
* Navicula kuetzingiana H.L. Smith, 1878
* Navicula kuetzingii Grunow, 1860
* Navicula kuntzei Reichelt, 1898
* Navicula kuolensis Cleve-Euler, 1934
* Navicula kuripanensis Hustedt in Schmidt & al., 1936
* Navicula kurzii Grunow in Cleve, 1878
* Navicula kuseliana H. Lange-Bertalot & Rumich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
* Navicula kutzingiana H.L.Smith, 1878
* Navicula kuusamensis Cleve-Euler, 1939
* Navicula kuwaitiana Hendey, 1970
* Navicula kwamkuji Hustedt, 1922
* Navicula kützingiana Hilse, 1863
* Navicula labrobacata Bone & Gosden, 1968
* Navicula lacertosa Hustedt, 1955
* Navicula laciniosa Schmidt in Schmidt & al., 1875
* Navicula lacrimans A.W.F.Schmidt
* Navicula lacrymans
* Navicula lacuna Patrick & Freese, 1961
* Navicula lacunarum Grunow, 1880
* Navicula lacunicola Patrick & Freese, 1961
* Navicula lacunolaciniata Lange-Bertalot & Bonik, 1976
* Navicula lacunosa Simonsen, 1992
* Navicula lacus-chandolensis Guiry & Karthick, 2020
* Navicula lacus-karluki Manguin ex Kociolek & Reviers, 1996
* Navicula lacus-lemani (J.Brun) J.Brun
* Navicula lacusbaicali
* Navicula lacuskarluki Manguin, 1960
* Navicula lacuslemanii
* Navicula lacustris Grunow, 1860
* Navicula lacustris Schmidt, 1874
* Navicula lacuum Lange-Bert., Hofmann, Werum & Van de Vijver, 2009
* Navicula ladogensis Cleve, 1891
* Navicula laeta A.Mayer, 1919
* Navicula laeta Ehrenberg, 1841
* Navicula laetvittata
* Navicula laevimarginata Hustedt, 1966
* Navicula laevis Cleve-Euler, 1922
* Navicula laevis Ehrenberg, 1854
* Navicula laevis Pantocsek, 1889
* Navicula laevissima sensu Donkin, 1871
* Navicula laevissima sensu W. Smith, 1856
* Navicula lagerheimii sensu Hustedt, 1921
* Navicula lagerheimii sensu Manguin, 1942
* Navicula lagerstedti
* Navicula lagerstedtii O'Meara, 1876
* Navicula lagerstedtii sensu Hustedt in Schmidt & al., 1934
* Navicula lagerstedtii sensu Kolbe, 1959
* Navicula lagerstedtii sensu Motschi, 1907
* Navicula lagunae Seddon & Witkowski, 2011
* Navicula laingii Foged, 1966
* Navicula lalia M.H.Hohn & Hellerman, 1963
* Navicula lambertensis Héribaud, 1903
* Navicula lamella Ehrenberg, 1840
* Navicula lamii Manguin, 1941
* Navicula lampra Schrader, 1969
* Navicula lamprocampa Ehrenberg, 1840
* Navicula lamprocarpa
* Navicula lanceolata Ehrenberg, 1838
* Navicula lanceolata sensu Hassall, 1845
* Navicula lanceolata sensu W. Smith, 1853
* Navicula lancettula Schumann, 1867
* Navicula lange-bertalotii E.Reichardt, 1985
* Navicula langoraensis Foged, 1966
* Navicula lapeyrereana Tempère & M. Peragallo in Tempère & Peragallo, 1908
* Navicula lapidosa sensu Foged, 1958
* Navicula lapila J.R.Carter, 1981
* Navicula lapsa Carter & Denny, 1992
* Navicula lata Brébisson ex Kützing, 1846
* Navicula lata sensu Van Heurck, 1880
* Navicula latelongitudinalis R.M.Patrick, 1959
* Navicula latens Krasske ex Hustedt, 1934 †
* Navicula lateropunctata J.H.Wallace, 1960
* Navicula laterostrata Hustedt, 1925
* Navicula latestriata Gregory
* Navicula latestriata Petit & Leuduger-Fortmoral
* Navicula latevittata Pantocsek, 1892
* Navicula laticeps Hustedt, 1942
* Navicula laticeps sensu Cleve-Euler, 1953
* Navicula latissima J.W. Bailey, 1854
* Navicula latissima sensu Brockmann, 1928
* Navicula lauca U.Rumrich & Lange-Bertalot
* Navicula lauriensis J.Frenguelli & H.A.Orlando, 1958
* Navicula lauta Grunow
* Navicula lawsonii Foged, 1966
* Navicula leboimei Manguin, 1960
* Navicula leemanniae Cholnoky, 1854
* Navicula lefevrei Manguin in Allorge & Manguin, 1941
* Navicula legumen Ehrenberg
* Navicula lehmanniae Lange-Bertalot & Steindorf in Moser, Steindorf & Lange-Bertalot, 1995
* Navicula leistikowii Lange-Bertalot, 1993
* Navicula lemanniae Cholnoky, 1954
* Navicula lemkei A.Witkowski, 2009
* Navicula lemmermanni Hustedt, 1911
* Navicula lengana
* Navicula lenoblei Manguin, 1952
* Navicula lenticula Østrup, 1913
* Navicula lenzi Krasske, 1939
* Navicula lenzii Hustedt, 1936
* Navicula leonardii Compère, 1967
* Navicula leonis Pantocsek, 1905
* Navicula lepida Gregory, 1856
* Navicula lepidissima Cleve-Euler, 1953
* Navicula lepidosa Khabakov, 1945
* Navicula lepidula Grunow, 1880
* Navicula lepta Schrader, 1969
* Navicula leptocephala Brébisson, 1880
* Navicula leptocephala Rabenhorst, 1853
* Navicula leptoceros Ehrenberg, 1854
* Navicula leptogongyla Ehrenberg, 1841 †
* Navicula leptogongyla Ehrenberg, 1843
* Navicula leptolopa Meister, 1937
* Navicula leptorhynchus Ehrenberg, 1843
* Navicula leptosoma Grunow, 1880
* Navicula leptostigma sensu Pantocsek, 1902
* Navicula leptostriata Jørgensen, 1948
* Navicula leptostylus Ehrenberg, 1842
* Navicula leptotermina Ehrenberg, 1844 (1845)
* Navicula lesinensis Cleve ex Thum, 1889
* Navicula lesinensis Grunow in Cleve, 1885
* Navicula lesmonensis Hustedt, 1957
* Navicula lesothensis Schoeman, 1969
* Navicula letourneurii Pantocsek, 1889
* Navicula letulenta Archibald, 1966
* Navicula leudugeri Cleve, 1883
* Navicula levanderi Hustedt, 1934
* Navicula leveillei Héribaud, 1903
* Navicula levensis Carruthers in J.E. Gray, 1864
* Navicula levis Pantocsek, 1889
* Navicula levissima
* Navicula leviuscula De Toni, 1891
* Navicula lewisiana Greville, 1863
* Navicula liaotungiensis Skvortzow, 1929
* Navicula libellus Gregory, 1857
* Navicula libonensis Schoeman, 1970
* Navicula librile Ehrenberg, 1832
* Navicula liburnica Grunow, 1860
* Navicula libyca Ehrenberg, 1840
* Navicula licenti Skvortzow, 1935
* Navicula ligneri Lauby, 1910
* Navicula limanense Østrup in Héribaud & al., 1920
* Navicula limata Hustedt, 1944
* Navicula limatoides Hustedt, 1950
* Navicula limbata Ehrenberg, 1843
* Navicula limicola Cleve, 1893
* Navicula limitanea Schmidt in Schmidt & al., 1875
* Navicula limnetica Kociolek in Kociolek & al., 2014
* Navicula limosa Rabenhorst, 1853
* Navicula limosa sensu Donkin, 1872
* Navicula limosa sensu Lagerstedt, 1873
* Navicula limpida Perty, 1852
* Navicula lindae Sullivan & Reimer, 1975
* Navicula linearicuneata Gleser in Afanas'eva & Gleser, 1986
* Navicula linearis Bory, 1827
* Navicula linearis Grunow, 1860
* Navicula lineata Bory, 1824
* Navicula lineata Bory, 1827
* Navicula lineata Turpin, 1828 (1816-1829)
* Navicula lineola Ehrenberg, 1854
* Navicula lineola Grunow
* Navicula lineolata Ehrenberg, 1838
* Navicula lineolata Ehrenberg, 1843
* Navicula lineostriata Patrick, 1936
* Navicula linter O. Witt, 1873
* Navicula liostauron Ehrenberg, 1841
* Navicula liouvillei M. Peragallo, 1921
* Navicula lirata Ehrenberg
* Navicula lithognatha Cholnoky, 1963
* Navicula lithognathoides Cholnoky, 1963
* Navicula litoralis
* Navicula litoricola Hustedt, 1955
* Navicula litorina Heiden, 1900
* Navicula litoris Salah, 1953
* Navicula litos M.H.Hohn & Hellerman, 1963
* Navicula littoralioides de Wildeman, 1897
* Navicula littoralis Donkin, 1871
* Navicula ljungneri Cleve-Euler
* Navicula lobata Cleve, 1878
* Navicula lobata Grove & Sturt, 1887
* Navicula lobata Schwartz in Rabenhorst, 1877
* Navicula lobeliae Jørgensen, 1948
* Navicula loczyi Pantocsek, 1889
* Navicula lohmannii H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
* Navicula loibl-sittlerii Reichardt, 1988
* Navicula lomastriata Hohn, 1966
* Navicula londonensis Foged, 1964
* Navicula longa (Gregory) Ralfs ex Pritchard, 1861
* Navicula longi Reinhold, 1937
* Navicula longicephala Hustedt, 1944
* Navicula longifissa Hustedt, 1952
* Navicula longirostris Hustedt, 1930
* Navicula longistriata Horikawa & Okuno in Okuno, 1940
* Navicula lorami Frenguelli, 1936 (1938)
* Navicula lorcana Azpeitia, 1911
* Navicula lorenziana Grunow, 1860
* Navicula lorenzii (Grunow) Hustedt, 1961
* Navicula lovenii Foged, 1964
* Navicula loveridgei Cholnoky, 1964
* Navicula lubbockii Hohn & Hellerman, 1961
* Navicula lubetii Konig, 1959
* Navicula lucenoides Giffen, 1980
* Navicula lucens Hustedt, 1942
* Navicula lucentiformis Cholnoky, 1960
* Navicula luciae A. Witkowski & H. Lange-Bertalot in H. Lange-Bertalot & S. I. Genkal, 1999
* Navicula luciana Cholnoky, 1960
* Navicula lucida O'Meara, 1876
* Navicula lucida Pantocsek, 1892
* Navicula lucidula Grunow, 1880
* Navicula lucifica (Kuntze) Pantocsek
* Navicula lucinensis Hustedt, 1950
* Navicula luculenta A.W.F.Schmidt, 1876
* Navicula ludloviana Schmidt, 1876 †
* Navicula ludlowiana
* Navicula luisii Patrick, 1961
* Navicula lumbricastriata Hohn & Hellerman, 1966
* Navicula lumen H. Peragallo, 1888
* Navicula lunata Kützing, 1844
* Navicula lunatapicalis Salah, 1953
* Navicula lundii Reichardt, 1985
* Navicula lundii Sinha & Srivastava, 1986
* Navicula lundstroemii sensu Cholnoky, 1958
* Navicula lundstromii
* Navicula lundströmii
* Navicula lunula Cleve, 1894
* Navicula lunulifera H.P.Gandhi ex Karthick, 2020
* Navicula lunyacsekii Pantocsek, 1886
* Navicula lupula Carter & Denny, 1982
* Navicula lurinda Carter & Denny, 1982
* Navicula lusitanica Zimmermann, 1917
* Navicula lusoria Giffen, 1975
* Navicula luxoriensis Foged, 1980
* Navicula luzonensis Hustedt, 1942
* Navicula lychnidis Jurilj, 1954
* Navicula lyra Ehrenberg, 1843
* Navicula lyra Kitton, 1884
* Navicula lyra sensu Brockmann, 1950
* Navicula lyra sensu Hanna, 1933
* Navicula lyrans Jurilj, 1957
* Navicula lyrata Ehrenberg, 1856
* Navicula lyrella Hustedt, 1964
* Navicula lyrigera Østrup, 1918
* Navicula mabokiana Fusey, 1964
* Navicula macdonaghi Frenguelli, 1930
* Navicula macer Schoeman, 1973
* Navicula maceria Schimanski, 1978
* Navicula macilenta Ehrenberg, 1837 †
* Navicula macra Grunow, 1876
* Navicula macraeana Pantocsek, 1889
* Navicula macraei Rabenhorst, 1864
* Navicula macrocephala Schumann, 1867
* Navicula macrogongyla Rabenhorst, 1860
* Navicula macromphala Schumann, 1867
* Navicula macropunctata Hajós, 1973
* Navicula macula Gregory, 1856
* Navicula maculata Hustedt
* Navicula maculosa Donkin, 1871
* Navicula maculosa H. Peragallo & M. Peragallo, 1898
* Navicula madagascarensis Cleve in Tempère, 1890
* Navicula madagascarensis Fritsch, 1914
* Navicula madeirensis Lange-Bertalot, 1993
* Navicula madrae Hanna & Grant, 1926
* Navicula madumensis E.G.Jørgensen, 1948
* Navicula maeandriana Cleve, 1893
* Navicula maeandrinoides Hustedt in Schmidt & al., 1930
* Navicula maeotica Pantocsek, 1902
* Navicula magellancia
* Navicula maginii M. Peragallo, 1924
* Navicula magna Skvortzov
* Navicula magnifica Hustedt in Schmidt & al., 1934
* Navicula magocsyi
* Navicula maharashtrensis Sarode & Kamat, 1984
* Navicula mahoodii A. Witkowsi & Witton in A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
* Navicula maidanae Metzeltin & Lange-Bertalot, 1998
* Navicula maillardii Germain, 1982
* Navicula major (sensu Dippel) F.W. Mills, 1934
* Navicula major sensu Grunow in Schmidt & al., 1876
* Navicula major sensu W. Smith, 1853
* Navicula majuscula Hustedt, 1964
* Navicula majusculoides Hustedt, 1964
* Navicula malacarae Frenguelli, 1945
* Navicula maleposita Simonsen, 1992
* Navicula maliana Maillard, 1977
* Navicula malica Carter & Denny, 1982
* Navicula malinvaudi Héribaud, 1902
* Navicula malombensis Otto Müller, 1910
* Navicula malutiana Schoeman, 1969
* Navicula mammalis Castracane, 1886
* Navicula manginii M. Peragallo, 1924
* Navicula manguini Guermeur, 1954
* Navicula manifesta Hustedt, 1939
* Navicula manifesta Marsson, 1900
* Navicula maniliensis
* Navicula mannii Hagelstein, 1939
* Navicula manokwariensis Cholnoky, 1963
* Navicula mansiensis Foged, 1966
* Navicula mantichora Pantocsek, 1892
* Navicula manubialis Archibald, 1966
* Navicula mardansouensis Héribaud, 1908
* Navicula margalithii Lange-Bertalot, 1985
* Navicula margarita Pantocsek, 1905
* Navicula margarita Schmidt in Schmidt & al., 1892
* Navicula margaritacea Hustedt, 1937
* Navicula margaritata Pantocsek, 1903
* Navicula margaritiana Witkowski, 1994
* Navicula margaritifera Pantocsek, 1892
* Navicula margaritifera Truan y Luard & Witt, 1888
* Navicula marginata Lewis, 1862
* Navicula marginestriata Hustedt in Schmidt & al., 1936
* Navicula margino-nodularis Salah, 1953
* Navicula margino-ornata Salah, 1955
* Navicula marginolineata Grove & Sturt, 1887
* Navicula marginonodularis Salah, 1953
* Navicula marginopunctata Grove & Sturt, 1887
* Navicula marginulata Cleve, 1881
* Navicula maria Hohn, 1966
* Navicula mariagracielae D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
* Navicula marina Janisch & Rabenhorst, 1863
* Navicula mariposae Cholnoky, 1968
* Navicula marlieri Kufferath, 1957
* Navicula marmorata Jurilj, 1957
* Navicula marnieri Manguin, 1957
* Navicula marnierii Manguin, 1960
* Navicula martini Krasske, 1939
* Navicula martinii Krasske
* Navicula martonfii Pantocsek, 1892
* Navicula martyi Lauby, 1910
* Navicula massadaea Ehrlich, 1978
* Navicula massalskiana Kochman-Kedziora, Olech & Van de Vijver, 2020
* Navicula mastogloidea Pantocsek, 1886
* Navicula matanza VanLandingham, 1975
* Navicula mauleri Brun, 1891
* Navicula mauriciana Van Heurck, 1909
* Navicula maxima sensu Donkin, 1872
* Navicula mayeri A. Cleve, 1953
* Navicula mediacomplexa M.H.Hohn & Hellernan, 1963
* Navicula mediahelos M.H.Hohn & Hellerman, 1963
* Navicula medica Skvortzow, 1935
* Navicula medioconvexa Hustedt, 1961
* Navicula mediocostata Reichardt, 1988
* Navicula mediocriformis Coste & Ricard, 1983
* Navicula medioinflata Pantocsek, 1912
* Navicula mediopartita E.Grove ex A.Schmidt, 1896
* Navicula mediopunctata Hustedt in Schmidt & al., 1934
* Navicula mediterranea Cleve & Brun
* Navicula mediterranea Kützing, 1844
* Navicula megacuspida Carlson, 1913
* Navicula megaloptera (Ehrenberg) Héribaud, 1893
* Navicula megapolitana Heiden in Schmidt & al., 1903
* Navicula megastauros Cleve, 1883
* Navicula meisterii Pantocsek, 1912
* Navicula melanesica Lange-Bertalot & Steindorf in Moser, Steindorf & Lange-Bertalot, 1995
* Navicula melanocephala Giffen, 1975
* Navicula melchersi Kutner, 1961
* Navicula meleagris Kützing, 1844
* Navicula melovskii Z.Levkov & S.Krstic, 2007
* Navicula membranacea Cleve, 1897
* Navicula menageae Cholnoky, 1954
* Navicula menaiana Hendey, 1956
* Navicula menapiensis O'Meara, 1876
* Navicula menda J.R.Carter & Bailey-Watts, 1981
* Navicula mendica Mann, 1925
* Navicula mendosina Frenguelli, 1934
* Navicula mendotia VanLandingham, 1975
* Navicula mengeae Cholnoky, 1954
* Navicula menilitica Pantocsek, 1889
* Navicula meniscoides Hustedt, 1955
* Navicula meniscula
* Navicula menisculus Schumann, 1867 †
* Navicula menisculus sensu Krenner, 1926
* Navicula menisculus sensu Pantocsek, 1902
* Navicula meniscus sensu Meister, 1912
* Navicula mentzii Foged, 1962
* Navicula mereschkowskii
* Navicula meridiepacifica Hustedt
* Navicula meridionalis Hustedt, 1952
* Navicula meridiorecens D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
* Navicula mersa Heiden
* Navicula mesogongyla (Ehrenberg) Kützing
* Navicula mesoleia Cleve in Cleve & Moller, 1879
* Navicula mesoleia Cleve, 1881
* Navicula mesolepta Heiberg, 1863
* Navicula mesolepta sensu Schmidt in Schmidt & al., 1876
* Navicula mesoleptoides Reinhard, 1869 (1870)
* Navicula mesopachya Ehrenberg, 1842
* Navicula mesotyla sensu Kutzing, 1844
* Navicula mesotyla sensu Schumann, 1867
* Navicula meulemansii A.Mertens, A.Witkowski & Lange-Bertalot, 2013
* Navicula meyeri Foged, 1966
* Navicula meyeri Skvortzov, 1937
* Navicula mica Hohn & Hellerman, 1963
* Navicula microcari Lange-Bertalot, 1993
* Navicula microcephala Grunow, 1868
* Navicula microdicta Cholnoky, 1962
* Navicula microdigitoradiata Lange-Bertalot, 1993
* Navicula microlyra Cholnoky, 1959
* Navicula micropupula Cholnoky, 1957
* Navicula microrhombus (Cholnoky) Schoeman & Archibald, 1977
* Navicula microrhynchus Grunow, 1882
* Navicula microrhynchus sensu Pantocsek, 1889
* Navicula microstauron (Ehrenberg) O'Meara, 1875
* Navicula microstoma Kützing, 1846
* Navicula microtatos
* Navicula migma M.H.Hohn & Hellerman, 1963
* Navicula mikado Pantocsek, 1892
* Navicula mikrotatos Pantocsek, 1886
* Navicula millotiana Manguin, 1952
* Navicula millsi Reinhold, 1937
* Navicula milthersii Foged, 1962
* Navicula mimicans Hanna, 1932
* Navicula mimula Mann, 1925
* Navicula mina Leuduger-Fortmorel, 1892
* Navicula minima Grunow, 1880
* Navicula minima sensu Foged, 1958
* Navicula minimoides Manguin ex Kociolek & Reviers, 1996
* Navicula minnewaukonensis Elmore, 1921
* Navicula minor De Toni, 1892
* Navicula minor Gregory, 1857
* Navicula minthe Hohn & Hellermann, 1963
* Navicula mintracta Carter & Denny, 1982
* Navicula minusculoides Hustedt, 1942
* Navicula minuta Sheshukova, 1956
* Navicula minuta Skvortzow, 1936
* Navicula minutissima Grunow, 1860
* Navicula minutissima Rabenhorst, 1853
* Navicula minutula W.Smith, 1853
* Navicula miocenica Hajós, 1959
* Navicula mira Pantocsek & Greguss in Greguss, 1913
* Navicula mirabilis Castracane, 1886
* Navicula mirabilis G.Leuduger-Fortmorel
* Navicula mirabunda Pantocsek & Greguss in Greguss, 1913
* Navicula miramaris Frenguelli, 1925
* Navicula miranda Hustedt, 1964
* Navicula mirifica Krasske
* Navicula misella Hustedt, 1955
* Navicula misionera Frenguelli, 1953
* Navicula mitigata Hustedt, 1966
* Navicula mitis Hustedt, 1945
* Navicula mocsarensis Pantocsek, 1892
* Navicula modesta Cleve-Euler, 1948
* Navicula modesta Grunow, 1882
* Navicula modica Hustedt, 1945
* Navicula moeandrina Cleve, 1893
* Navicula moenofranconica Lange-Bertalot, 1993
* Navicula moerckii Foged, 1966
* Navicula moesta Schmidt in Schmidt & al., 1881
* Navicula moesta sensu Wolle, 1890
* Navicula molesta Mann, 1925
* Navicula molestiformis Hustedt, 1949
* Navicula mollicula Hustedt, 1945
* Navicula mollis (W.Smith) Cleve, 1896
* Navicula mollissima Hustedt, 1962
* Navicula monela Hohn, 1966
* Navicula mongolica Skvortzow, 1935
* Navicula mongolreinhardtii M.B.Edlund & N.Soninkhishing, 2009
* Navicula monile Ehrenberg, 1840
* Navicula monita Hustedt, 1966
* Navicula monmouthiana Grunow in Cleve & Grunow, 1880
* Navicula monmouthianastodderi Yermoloff, 1918
* Navicula monoculata Hustedt, 1945
* Navicula monodi Guermeur, 1954
* Navicula monodon Brun, 1891
* Navicula monradii Foged, 1966
* Navicula montana Moghadam, 1969
* Navicula montana Schoeman, 1970
* Navicula montanensis Moghadam, 1969
* Navicula montisatrae Cholnoky, 1959
* Navicula mooreana O'Meara, 1872
* Navicula moorosiana Schoeman, 1973
* Navicula moralesii D. Metzeltin & H. Lange-Bertalot, 2007
* Navicula moreii O'Meara, 1876
* Navicula mormonorum Grunow ex A.Schmidt, 1876
* Navicula morricei Hanna, 1932
* Navicula moskalii Metzeltin, Witkowski & Lange-Bertalot, 1996
* Navicula mossbergensis Cleve-Euler, 1953
* Navicula mossiana O'Meara, 1876
* Navicula motschii Meister, 1912
* Navicula mournei Patrick, 1959
* Navicula mucicola Hustedt, 1939
* Navicula mucicoloides Hustedt, 1942
* Navicula mucosa Meunier, 1915
* Navicula mucronata Elmore, 1921
* Navicula mucronula Pantocsek, 1902
* Navicula muelleri R.E.M. Archibald, 1983
* Navicula mugadensis Gandhi, 1959
* Navicula mujibensis Gerloff, Natour & Rivera, 1984
* Navicula multicopsiforme W. & G.S. West, 1911
* Navicula multicopsis
* Navicula multicostata Grunow, 1860
* Navicula multicostata sensu Schmidt in Schmidt & al., 1875
* Navicula multigramme M.H.Hohn & Hellerman, 1963
* Navicula multiperla Nygaard, 1956
* Navicula multiplex Van Landingham
* Navicula multipunctata J.Y.Chen & H.Z.Zhu
* Navicula multiseriata Grunow in Cleve, 1881
* Navicula multistriata Patrick, 1936
* Navicula muncki Foged, 1972
* Navicula munda Janisch in Schmidt & al., 1881
* Navicula muralibionta Bock, 1970
* Navicula muraliformis Hustedt, 1949
* Navicula muralis Grunow, 1880
* Navicula muraloides Hustedt, 1950
* Navicula musca sensu Donkin, 1872
* Navicula muscaeformis Grunow
* Navicula muscaeformis Pantocsek, 1892
* Navicula muscatinei Reimer & Lee, 1986
* Navicula muscerda Hohn, 1961
* Navicula musciformis Grunow, 1878
* Navicula muscora J.P.Kociolek & B.Reviers, 1996
* Navicula muscosa Skvortzow, 1938
* Navicula mutabilis Gregory, 1855
* Navicula mutica Grunow, 1860
* Navicula mutica sensu Rabenhorst, 1848-1860
* Navicula mutico-rotaeana Brun, 1901
* Navicula muticoides Hustedt, 1949
* Navicula muticopsiformis West & G.S.West, 1911
* Navicula muticopsis Van Heurck, 1909
* Navicula muzafarovii A.Witkowski & H.Lange-Bertalot, 2012
* Navicula my Cleve, 1895
* Navicula nabrona Carter & Denny, 1982
* Navicula nagbogensis Foged, 1966
* Navicula nagjae H. Lange-Bertalot & D. Metzeltin, 2006
* Navicula nakai Skvortzov, 1971
* Navicula namibica Lange-Bertalot & Rumrich, 1993
* Navicula nana Ehrenberg, 1862
* Navicula nana Gregory
* Navicula nanella Conger, 1924
* Navicula nansenii Foged, 1964
* Navicula narinosa Hohn, 1961
* Navicula nasuta Giffen, 1973
* Navicula natalensis Cholnoky, 1957
* Navicula natchikae Boye Petersen, 1946
* Navicula naumanni Hustedt, 1942
* Navicula nautica Cholnoky, 1963
* Navicula naveana Grunow, 1863
* Navicula navigans Brun in Schmidt & al., 1892
* Navicula navrongensis Foged, 1966
* Navicula nebulosa (Meneghini) Grunow, 1880
* Navicula nebulosa Gregory, 1857
* Navicula nebulosa Manguin in Bourrelly & Manguin, 1952
* Navicula neglecta Karsten, 1899
* Navicula neglecta Krasske, 1929
* Navicula neglecta Kützing, 1844
* Navicula neidioides Manguin in Bourrelly & Manguin, 1952
* Navicula nemoris M.H.Hohn & Hellerman, 1963
* Navicula neocaledonica Manguin, 1962
* Navicula neocomplanata Hustedt, 1962
* Navicula neocruciata De Toni, 1891
* Navicula neogena Pantocsek, 1892
* Navicula neoiridis
* Navicula neomundana (Lange-Bert. & Rumrich) Lange-Bert., Jarlman & Van de Vijver in Van de Vijver & Lange-Bertalot, 2009
* Navicula neoplicata Hustedt, 1962
* Navicula neoreversa VanLandingham, 1975
* Navicula neoseptentrionalis VanLandingham, 1971
* Navicula neoventricosa Hustedt F., 1964
* Navicula neowiesneri Chudaev & Kulikovskiy, 2016
* Navicula nervosa Brebisson (in litt.?) ex Kutzing, 1849
* Navicula netroformis Andrews, 1971
* Navicula neumayeri Janisch in Schmidt & al., 1876
* Navicula neumayeriana Pantocsek, 1905
* Navicula neumayerii Pantocsek, 1892
* Navicula neupaueri Pantocsek, 1886
* Navicula nezsideriana Pantocsek, 1912
* Navicula niceaensis H. Peragallo, 1888
* Navicula nicobarica Grunow, 1863
* Navicula nicolai Pantocsek, 1902
* Navicula nidulans Cleve, 1891
* Navicula nielsfogedii J.C.Taylor & Cocquyt, 2016
* Navicula nienta J.R.Carter, 1966
* Navicula nigra Thum's slides
* Navicula nigri De Notaris in De Notaris & Baglietto, 1872
* Navicula nigricans Pantocsek, 1892
* Navicula nigrii De Notaris emend Granetti, 1968
* Navicula nimbus M.H.Hohn & Hellerman, 1963
* Navicula niobrara Andrews, 1970
* Navicula nipkowii Meister, 1932
* Navicula nippon Skvortzow, 1936
* Navicula nipponica (Skvortzov) Lange-Bertalot, 1993
* Navicula nitida Smith ex Gregory
* Navicula nitrifuga Cholnoky, 1964
* Navicula nitrophila J.B.Petersen, 1928
* Navicula nitzschii Ehrenberg, 1837
* Navicula nivalis Ehrenberg, 1853
* Navicula nivaloides W.Bock, 1962
* Navicula nivellis Fusey, 1953
* Navicula nivorum M.Peragallo
* Navicula nobilis Kützing
* Navicula nodosa Schmidt in Schmidt & al., 1876
* Navicula nodosa sensu Neupauer, 1867
* Navicula nodulosa (Brébisson) Kützing
* Navicula nolens Simonsen, 1959
* Navicula nolensoides Bock, 1970
* Navicula nonana Cholnoky, 1966
* Navicula nootkana Bory, 1827
* Navicula norae Metzeltin, Lange-Bertalot & García-Rodríguez, 2005
* Navicula nordenskioeldi Foged, 1964
* Navicula nordstedtiana Grunow in Cleve & Möller, 1879
* Navicula normalis Hustedt, 1955
* Navicula normaloides Cholnoky, 1968
* Navicula normanni Rebenhorst
* Navicula northumbrica Donkin, 1861
* Navicula northumricaeformis M. Peragallo in Héribaud & al., 1920
* Navicula norwegica Ehrenberg, 1840
* Navicula notabilis Pantocsek, 1889
* Navicula notabilis sensu Pantocsek, 1902
* Navicula notanda Cleve-Euler, 1953
* Navicula notanda Østrup, 1913
* Navicula notha Wallace, 1960
* Navicula novadecipiens Hustedt, 1966
* Navicula novaeguineaensis Tempère in Brun & al., 1891
* Navicula novaeseelandiae Hustedt, 1964
* Navicula novaesiberica Lange-Bertalot, 1993
* Navicula nsutaensis Foged, 1966
* Navicula nubicola Grunow in Van Heurck, 1880
* Navicula nubila Manguin, 1964
* Navicula nuda Pantocsek, 1889
* Navicula nugalis M.H.Hohn & Hellerman, 1963
* Navicula nugax W. Smith in Greville, 1855
* Navicula nummularia Greville, 1859
* Navicula nummularioides M. Peragallo in Tempère & Peragallo, 1908
* Navicula nunguaensis Foged, 1966
* Navicula nunivakiana Patrick & Freese, 1961
* Navicula nutata Carter & Denny, 1982
* Navicula nuwukiana Patrick & Freese, 1961
* Navicula ny Cleve, 1894
* Navicula nyella Hustedt, 1964
* Navicula nympharum Hustedt in Schmidt & al., 1936
* Navicula o'mearii
* Navicula oamaruensis Grunow in Schmidt & al., 1888
* Navicula oamaruensis Schrader, 1969
* Navicula obdurata Hohn & Hellermann, 1963
* Navicula oberohensis Hustedt, 1954
* Navicula obesa Otto Müller, 1910
* Navicula obiecta Cholnoky, 1964
* Navicula obligata Hustedt, 1966
* Navicula obliqua Ehrenberg in Ralfs in Pritchard, 1861
* Navicula obliqua Turpin, 1816-1829
* Navicula oblique striata Schmidt in Schmidt & al., 1877
* Navicula oblita Mereschkowsky, 1902
* Navicula oblonga (Kützing) Kützing, 1844 †
* Navicula oblonga Ehrenberg, 1843
* Navicula oblonga Neupauer, 1867
* Navicula oblonga Østrup, 1910
* Navicula oblongella sensu Grunow, 1860
* Navicula oblongiformis Hustedt in Schmidt & al., 1934
* Navicula oblongopunctata Zakrzewski, 1934
* Navicula obscura Hustedt, 1937
* Navicula obscura Hustedt, 1942
* Navicula obscura Pantocsek, 1909
* Navicula observabilis Heiden & Kolbe, 1928
* Navicula observanda Simonsen, 1959
* Navicula obsidialis Hustedt, 1942
* Navicula obsoleta Hustedt, 1942
* Navicula obstinata Krasske, 1939
* Navicula obtecta I.Jüttner & E.J.Cox
* Navicula obtusa Bory, 1824
* Navicula obtusa Bory, 1827
* Navicula obtusa Ehrenberg, 1843
* Navicula obtusa W.Smith, 1853
* Navicula obtusangula Hustedt, 1942
* Navicula obtusata Karajeva, 1964
* Navicula obtuseprotracta Hustedt, 1966 †
* Navicula obtuserostrata Hustedt, 1961
* Navicula ocalli Hohn, 1961
* Navicula occasa Giffen, 1975
* Navicula occidentalis Cleve, 1894
* Navicula occulta Krasske, 1929
* Navicula ocellata Mann, 1925
* Navicula ocellata Skvortzov
* Navicula ocellata Østrup, 1904
* Navicula ochridana Hustedt, 1945
* Navicula octavosignata Salah, 1953
* Navicula oculata Meunier, 1910
* Navicula oculiformis Hustedt, 1955
* Navicula oculus Østrup, 1897
* Navicula odiosa Wallace, 1960
* Navicula oerensis Cleve-Euler, 1953
* Navicula oestrupi Cleve, 1896
* Navicula oestrupi Heiden in Schmidt & al., 1905
* Navicula oestrupii Héribaud in Héribaud & al., 1920
* Navicula oestrupii Pantocsek, 1908
* Navicula oestrupioides Hustedt, 1961
* Navicula oetzvallensis H. Lange-Bertalot in Werum & Lange-Bertalot, 2004
* Navicula ognjanovae Z.Levkov & D.Metzeltin, 2007
* Navicula ohiensis Ehrenberg, 1856
* Navicula okawangoi Cholnoky, 1966
* Navicula okunoi Hustedt, 1966
* Navicula olgae Pantocsek, 1902
* Navicula oliffii Cholnoky, 1956
* Navicula oligotraphenta Lange-Bertalot & Hofmann, 1993
* Navicula olivacea Leuduger-Fortmorel, 1879
* Navicula olivieri Héribaud, 1903
* Navicula omearae Gogorev, 2018
* Navicula omega Cleve, 1893
* Navicula omegopsis Hustedt, 1944
* Navicula omicron Cleve, 1895
* Navicula omissa Hustedt, 1945
* Navicula omitta Pantocsek, 1913
* Navicula omphalia Ehrenberg, 1844 (1845)
* Navicula onoensis Okuno, 1952
* Navicula opaia Schrader, 1969
* Navicula opalensis K.E. Lohman, 1957
* Navicula ophiocephala Cleve & Grove, 1891
* Navicula opiei Manguin ex Kociolek & Reviers, 1996
* Navicula opima Grunow, 1867
* Navicula opimoides Cholnoky, 1959
* Navicula opportuna Hustedt, 1950
* Navicula oppressa Hustedt, 1952
* Navicula oppugnata Hustedt, 1945
* Navicula optima Hanna, 1932
* Navicula opuntioides Simonsen, 1959
* Navicula oranensis A. Schmidt
* Navicula orbiculata Patrick, 1959
* Navicula orbis J.R.Carter, 1981
* Navicula orbita Carter, 1966
* Navicula orcula Cholnoky, 1963
* Navicula ordinaria Hustedt, 1950
* Navicula ordinata Brébisson ex Ralfs in Pritchard, 1861
* Navicula oregonensis Hustedt, 1966
* Navicula orellana Hohn, 1966
* Navicula orensis A. Cleve, 1953
* Navicula oribica Cholnoky, 1960
* Navicula orientata Karajeva, 1964
* Navicula oris Zanon, 1949
* Navicula ornata A.W.F.Schmidt
* Navicula orphei Pantocsek, 1905
* Navicula orthoneoides Hustedt, 1955
* Navicula ortolanae Hanna & Grant, 1926
* Navicula orvinii Foged, 1964
* Navicula oscitans A.W.F.Schmidt
* Navicula osculata Ehrenberg, 1842
* Navicula osculifera Cleve Ms. in Tempère & Peragallo, 1889-1895
* Navicula ostenfeldii Ostrup
* Navicula osterosa Giffen, 1976
* Navicula ostii Cholnoky, 1963
* Navicula ostracodarum Pantocsek, 1892
* Navicula ostrearia Bory, 1827
* Navicula ostrearia Bory, 1831
* Navicula ostrearia Kützing, 1849
* Navicula ostrobottnica Cleve-Euler, 1939
* Navicula ostrogothica Cleve-Euler, 1953
* Navicula ostrupii Héribaud in Héribaud & al., 1920
* Navicula oswaldii Janisch, 1888
* Navicula ovalis Hilse, 1875
* Navicula ovalis Naegeli in Kutzing, 1849
* Navicula ovalis W.Smith, 1853
* Navicula ovata M. Peragallo
* Navicula ovata M. Peragallo in Héribaud, 1893
* Navicula oviformis Cleve, 1895
* Navicula ovulum Grunow, 1860
* Navicula ovulum Schmidt, 1874
* Navicula ovumpaschale Schmidt in Schmidt & al., 1875
* Navicula oxeia Castracane, 1886
* Navicula oxyphyllum Kützing, 1844
* Navicula oxyptera Kützing, 1844
* Navicula oxysphenia Ehrenberg, 1846
* Navicula paanaensis A.Cleve, 1939
* Navicula paca Hohn & Hellerm., 1963
* Navicula pacardi I.Kaczmarska, 1985 †
* Navicula pacha Schrader, 1969
* Navicula pachycephala sensu Schumann, 1867
* Navicula pacifica Grunow, 1867
* Navicula pacifica Meister, 1937
* Navicula paeninsulae Cholnoky, 1963
* Navicula pagesi Héribaud, 1902
* Navicula pagophila Grunow, 1884
* Navicula palea Hassall, 1845
* Navicula palea Skvortzov, 1936
* Navicula paleacea Pantocsek, 1902
* Navicula palearctica Hustedt, 1966
* Navicula palebralis
* Navicula palestinae Gerloff, Natour & Rivera, 1984
* Navicula pallescens T.Marsson, 1900
* Navicula pallida Hustedt, 1962
* Navicula palludinarum
* Navicula palpebralis Brébisson ex W.Smith, 1853
* Navicula palpebrulum Cholnoky, 1961
* Navicula paludinarum Pantocsek, 1892 †
* Navicula paludosa Hustedt, 1957
* Navicula palustris P.Fusey, 1948
* Navicula pampeana Frenguelli, 1926
* Navicula panda Lohman & Andrews, 1968
* Navicula panduriformis Baranov, 1942
* Navicula pangeroni Leuduger-Fortmorel, 1892
* Navicula panhalgarhensis H.P.Gandhi, 1959
* Navicula pannonica Grunow, 1860
* Navicula pannosa Frenguelli, 1953
* Navicula pantocseki Hajós, 1968
* Navicula pantocsekiana De Toni, 1891
* Navicula papilio D.E. Kellog, M. Stuiver; T.B. Kellogg & G.H. Denton, 1980
* Navicula papilioarea A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
* Navicula papillifera O'Meara, 1876
* Navicula papula A.W.F.Schmidt, 1875
* Navicula parabilis Hohn & Hellerman, 1963
* Navicula paracari Lange-Bertalot, 1993
* Navicula paradoxa Ehrenberg, 1843
* Navicula paradoxa Skvortzow, 1937
* Navicula parahasta Lange-Bertalot & Miho, 2001
* Navicula parallela Castracane, 1886
* Navicula parallelistriata Pantocsek, 1889
* Navicula paranipponica Lange-Bertalot, 1993
* Navicula paraobesa D.Metzeltin & Z.Levkov, 2007
* Navicula parapontica A.Witkowski, M.Kulikovskiy, E.Nevrova & H.Lange-Bertalot, 2010
* Navicula pararabda Schrader, 1969
* Navicula parasubtilissima H.Kobayasi & T.Nagumo, 1988
* Navicula paratunkae Boye Petersen, 1946
* Navicula parca A.Schmidt, 1875
* Navicula parca sensu Ostrup, 1895
* Navicula parentum Simonsen, 1959
* Navicula pargemina G.J.C.Underwood & M.L.Yallop, 1994
* Navicula parinacota Rumrich & Lange-Bertalot in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
* Navicula paripinnata Pantocsek, 1892
* Navicula parmula Brébisson ex Kützing, 1846
* Navicula parodia Hohn, 1961
* Navicula parsura Hustedt, 1962
* Navicula partabgarhensis Gandhi, 1955
* Navicula parthenopea Peragallo & Peragallo, 1908
* Navicula particulus Foged, 1971
* Navicula partita Mann, 1925
* Navicula parunculoides Hustedt, 1952
* Navicula parunculus Hustedt, 1952
* Navicula parva (Meneghini ex Kutzing) Cleve-Euler, 1953
* Navicula parva Skvortzow, 1935
* Navicula parvipendata Cholnoky, 1966
* Navicula parvula (Grunow) Hustedt, 1909
* Navicula parvula H.L. Smith, 1878
* Navicula parvula Ralfs, 1861
* Navicula parvula sensu Lagerstedt, 1873
* Navicula pascuorum Cholnoky, 1965
* Navicula patagonica
* Navicula patricia Mann, 1925
* Navicula patrickae Hustedt, 1955
* Navicula patrina Carter & Denny, 1982
* Navicula patula W.Smith, 1853
* Navicula paucis Krasske, 1949
* Navicula paucivisitata R.M.Patrick, 1959
* Navicula paul-schulzii Witkowski & Lange-Bertalot
* Navicula paulseniana J.B.Petersen, 1930
* Navicula pauper Mann, 1925
* Navicula paupercula Lange-Bertalot & U.Rumrich
* Navicula pavida Pantocsek, 1892
* Navicula pavillardi Hustedt, 1939
* Navicula pavillardii Hustedt, 1939
* Navicula paynei Ross, 1972
* Navicula pectinalis Brébisson in litt., W. Smith, 1856
* Navicula peculiarisis Salah & Tamas, 1968
* Navicula pedalis Brun, 1891
* Navicula pediculus Cleve, 1896
* Navicula peguenensis Moura, 1963
* Navicula peisonis Grunow
* Navicula peisonis sensu Pantocsek, 1902
* Navicula peisonis sensu Schmidt in Schmidt & al., 1877
* Navicula pelagi Schmidt in Schmidt & al., 1875
* Navicula pelagica Cleve, 1896
* Navicula pellicola Brockmann, 1950
* Navicula pelliculosa Rabenhorst, 1864
* Navicula pellucida Karsten, 1905
* Navicula pellucida O'Meara, 1867
* Navicula pellucidoides Hustedt, 1962
* Navicula pellucidula Hustedt
* Navicula pelta Hohn, 1966
* Navicula peltoensis A.Cleve, 1934
* Navicula peltoensis sensu Cleve-Euler, 1953
* Navicula peltoides Hendey, 1958
* Navicula pennata A.Schmidt, 1876
* Navicula pennsylvanica Patrick, 1966
* Navicula pensacolae Cleve, 1881
* Navicula penzhica Lupikina & Dolmatova, 1985
* Navicula peragalli Brun, 1891
* Navicula peragalli Frenguelli, 1923
* Navicula perangustissima Y.Li & Metzeltin iin Li & al., 2020
* Navicula peratomus Hustedt, 1957
* Navicula peraustralis West & G.S.West, 1911
* Navicula perducta Pantocsek, 1892
* Navicula perdurrans Pantocsek, 1902
* Navicula peregrina (Ehrenberg) Kützing, 1844
* Navicula peregrina sensu Pantocsek, 1902
* Navicula peregrinoides A. Cleve(-Euler) in Halden, 1917
* Navicula peregrinoides D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
* Navicula peregrinoides Muzafarov, 1952
* Navicula peregrinopsis H. Lange-Bertalot & A. Witkowski in A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
* Navicula perelegans Hustedt, 1952
* Navicula perennis Pantocsek, 1903
* Navicula perexigua Østrup, 1910
* Navicula perfida Manguin ex Kociolek & Reviers, 1996
* Navicula perfidissima Lange-Bertalot, 1989
* Navicula pergamonensis Foged, 1982
* Navicula perhibita Hustedt, 1950
* Navicula perhyalina Cleve-Euler, 1953
* Navicula peripontica H. Lange-Bertalot & D. Metzeltin, 2006
* Navicula peripunctata Brun, 1891
* Navicula perlata Hustedt in Schmidt & al., 1934
* Navicula perlata Marsson, 1900
* Navicula perlatoides Hustedt, 1966
* Navicula perlepida Cleve, 1883
* Navicula perlepida Grunow, 1884
* Navicula perlonga Pantocsek, 1889
* Navicula perlucens Østrup, 1895
* Navicula perlucida Hustedt, 1937
* Navicula perminuta Grunow, 1880
* Navicula perminuta Østrup, 1913
* Navicula permitis Hustedt, 1945
* Navicula permulsa Hustedt in Schmidt & al., 1934
* Navicula perobesa Hustedt, 1934 †
* Navicula peroblonga D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
* Navicula peroi Gogorev, 2018
* Navicula perotettii (Grunow) Grunow, 1877
* Navicula perotii Patrick & Freese, 1961
* Navicula perparva Hustedt, 1937
* Navicula perpendicularis Cleve-Euler, 1953
* Navicula perpicea M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
* Navicula perplexa H.Peragallo & M.Peragallo, 1897
* Navicula perplexoides Hustedt, 1964
* Navicula perpusilloides J.Y.Chen & H.Z.Zhu
* Navicula perrhombus Hustedt ex Simonsen
* Navicula perrostrata Hustedt in Schmidt & al., 1936
* Navicula perrotetii
* Navicula perryana Kitton, 1873
* Navicula persculpta Pantocsek, 1903
* Navicula persica Rabenhorst, 1853
* Navicula persignata Cholnoky, 1968
* Navicula pertensa Giffen, 1967
* Navicula pertenuis Hustedt in Schmidt & al., 1934
* Navicula pertenuis Hustedt, 1934
* Navicula pertinax Cholnoky, 1960
* Navicula perturbata Jurilj, 1954
* Navicula pervasta Pantocsek, 1892
* Navicula perventralis Hustedt, 1937
* Navicula peterseni Hustedt, 1937
* Navicula petersenii Hustedt, 1937
* Navicula peticolasii M.Peragallo, 1909
* Navicula petilina Carter & Denny, 1982
* Navicula petitiana Grunow in Cleve, 1881
* Navicula petrmarvanii Falasco & Ector, 2009
* Navicula petrovii E.Nevrova; A.Witkowski, J.P.Kociolek & H.Lange-Bertalot, 2014
* Navicula petrovskae Z.Levkov & S.Krstic, 2007
* Navicula peudolucidula Guermeur, 1954
* Navicula peysonis
* Navicula pfitzeriana O'Meara, 1876
* Navicula pfitzeriana O. Witt
* Navicula phalangium Pantocsek, 1892
* Navicula phantasma Hohn, 1966
* Navicula phi Cleve, 1895
* Navicula philippina Skvortzow, 1937
* Navicula philippinarum Mann, 1925
* Navicula philippinica De Toni, 1891
* Navicula philopena Ehrenberg
* Navicula phyllepta Kützing, 1844
* Navicula phylleptosoma Lange-Bertalot, 1999
* Navicula phylleptosomaformis Seddon & Witkowski, 2011
* Navicula phyllophaena Ehrenberg, 1872
* Navicula pi Cleve, 1893
* Navicula picea M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
* Navicula picta Ehrenberg, 1835
* Navicula pieli Voigt, 1949
* Navicula pierre-comperei H.Lange-Bertalot & G.Hofmann, 2014
* Navicula pileda Gregory, 1856
* Navicula pinguis Mann, 1907
* Navicula pinna Chin & Cheng, 1979
* Navicula pinnata Pantocsek, 1889
* Navicula pinnularia Meunier, 1910
* Navicula pinnularioides Østrup
* Navicula pistillum Bleisch, 1863
* Navicula pitoti Guermeur, 1954
* Navicula placentiformis Hustedt, 1944
* Navicula placentula sensu Pantocsek, 1902
* Navicula placida A.W.F.Schmidt
* Navicula placita Grove & Sturt, 1887
* Navicula plagiostoma Grunow, 1879
* Navicula plana Hustedt in Schmidt & al., 1936
* Navicula planamembranacea Hendey, 1964
* Navicula planiceps Cleve-Euler, 1953
* Navicula platalea Ehrenberg, 1842
* Navicula plathi Brockmann, 1950
* Navicula platycephala Otto Müller, 1899
* Navicula platystoma Ehrenberg, 1838
* Navicula platyventris Meister, 1934 (1935)
* Navicula plaudinarum
* Navicula plausibilis Hustedt, 1966
* Navicula pletura Hohn, 1961
* Navicula pleuronectes (Ehrenberg) De Toni, 1891
* Navicula pleurophora Kützing, 1844
* Navicula pleurostauroides Frenguelli, 1945
* Navicula pleurostaurum Mann, 1907
* Navicula plicata Bodeanu, 1976
* Navicula plicata Donkin, 1873
* Navicula plicatoides Hustedt, 1962
* Navicula plicatula Grunow in Cleve & Möller, 1878
* Navicula plitvicensis Hustedt, 1945
* Navicula plumbicolor O'Meara, 1876
* Navicula pluscula Cholnoky, 1960
* Navicula plutonia O'Meara, 1872
* Navicula poconoensis Patrick, 1945
* Navicula podolica Gaponov, 1915
* Navicula podzorskii Lange-Bertalot, 1993
* Navicula poirieri Lauby, 1910
* Navicula polae Heiden, 1903
* Navicula polaris Lagerstedt, 1873
* Navicula poli Nicolucci, 1842
* Navicula polita Brun, 1891
* Navicula polyconfusa VanLandingham, 1975
* Navicula polygibba Pantocsek, 1892
* Navicula polygona Brun, 1891
* Navicula polymorpha Lagerstedt, 1873
* Navicula polyonca Brébisson, 1849
* Navicula polyplexa VanLandingham, 1975
* Navicula polyptera Ehrenberg
* Navicula polysticta Greville, 1859
* Navicula polystricta
* Navicula ponticula Giffen, 1970
* Navicula ponticulus K. McCartney & S.W. Wise Jr., 1990
* Navicula pontifica Mann, 1925
* Navicula poretzkiae Korotkevich, 1960
* Navicula poretzkyi Jouravleva, 1936
* Navicula porifera Hustedt, 1944
* Navicula porifera Jurilj, 1957
* Navicula porrecta (Ehrenberg) Kützing, 1844
* Navicula porta-aurata A.Witkowski, H.Lange-Bertalot & M.Bak, 2009
* Navicula portanova Riznyk, 1973
* Navicula portaregiensis A. Berg, 1952
* Navicula porticola Cholnoky, 1963
* Navicula portomontana Cleve, 1894
* Navicula portomonttana
* Navicula poseidon Cholnoky, 1968
* Navicula potzgeri C.W.Reimer, 1961
* Navicula powellii sensu H. Peragallo, 1888
* Navicula pozzuoliensis VanLandingham, 1975
* Navicula praecepta A. Berg in Berg & Hessland, 1949
* Navicula praeclara Pantocsek, 1892
* Navicula praedicabilis Simonsen, 1959
* Navicula praedii Cholnoky & Claus, 1961
* Navicula praeflua Pantocsek, 1892
* Navicula praegnans Skuja, 1937
* Navicula praerupta Hustedt, 1944
* Navicula praesecta Schmidt, 1874
* Navicula praestes Schmidt in Schmidt & al., 1875
* Navicula praestoeensis M.Møller, 1950
* Navicula praeterita Hustedt, 1945
* Navicula praetexta Ehrenberg, 1860
* Navicula praetexta sensu Truan y Luard & Witt, 1888
* Navicula pragma M.H.Hohn & Hellerman, 1963
* Navicula pragmatica Giffen, 1967
* Navicula prespanensis Z.Levkov & D.Metzeltin, 2007
* Navicula pressa Pantocsek, 1892
* Navicula primigena
* Navicula primordialis Pantocsek, 1892
* Navicula prinslooii Schoeman, 1969
* Navicula prisca Schmidt in Schmidt & al., 1875
* Navicula pristina Afanas'eva in Afanas'eva & Gleser, 1986
* Navicula pristiophora Janisch in Schmidt & al., 1881
* Navicula probabilis Schmidt in Schmidt & al., 1877
* Navicula problematica Azpeitia, 1911
* Navicula problematica Cleve-Euler, 1915
* Navicula problematica Østrup, 1908
* Navicula proboscoidea Heiden, 1900
* Navicula procera Pantocsek, 1889
* Navicula prodiga Mann, 1907
* Navicula producta (Grunow) Forti, 1902
* Navicula producta Brébisson
* Navicula producta Pantocsek, 1905
* Navicula producta Ralfs in Pritchard, 1861
* Navicula producta sensu Dippel, 1905
* Navicula prominula Schmidt in Schmidt & al., 1875
* Navicula promota Archibald, 1971
* Navicula propinqua Cleve-Euler, 1953
* Navicula propinqua Schmidt in Schmidt & al., 1875
* Navicula proserpinae Pantocsek
* Navicula proserpinae Rabenhorst, 1864
* Navicula protearum Cholnoky, 1959
* Navicula protracta (Grunow) Cleve, 1894
* Navicula protracta Grunow, 1880
* Navicula protracta Kustner, 1914
* Navicula protracta sensu Hustedt, 1950
* Navicula protractoides Hustedt, 1957
* Navicula protrudens Mann, 1925
* Navicula proveniens Cholnoky, 1961
* Navicula proxima Janisch in Schmidt & al., 1881
* Navicula pseudacceptata H.Kobayasi, 1986
* Navicula pseudagrestis Lund, 1946
* Navicula pseudagrestis sensu Foged, 1958
* Navicula pseudanglica Cleve-Euler, 1948
* Navicula pseudanglica Lange-Bertalot, 1985
* Navicula pseudannulata Frenguelli, 1941
* Navicula pseudatomus Lund, 1946
* Navicula pseudo-libellus Attheya
* Navicula pseudo-libellus T. West, 1860
* Navicula pseudo-schoenfeldii Skvortzow, 1971
* Navicula pseudoacceptata Kobayasi in Kobayasi & Mayama, 1986
* Navicula pseudoaffinis Mann, 1925
* Navicula pseudoanglica Foged & Moller, 1968
* Navicula pseudoantonii Z.Levkov & D.Metzeltin, 2007
* Navicula pseudoapproximata Hendey, 1958
* Navicula pseudoarvensis Hustedt, 1942
* Navicula pseudoaspera Pantocsek, 1892
* Navicula pseudobrasiliana A.Tuji, 2003
* Navicula pseudobrehmii Hustedt, 1966
* Navicula pseudobrevissima Manguin in Bourrelly & Manguin, 1952
* Navicula pseudobrockmannii Manguin, 1964
* Navicula pseudobryophila Hustedt, 1942
* Navicula pseudocari Krasske, 1939
* Navicula pseudocarinifera Manguin, 1960
* Navicula pseudocarminata Manguin, 1952
* Navicula pseudocincta De Toni, 1891
* Navicula pseudocitrus Manguin in Bourrelly & Manguin, 1954
* Navicula pseudoclamans J.R.Carter, 1981
* Navicula pseudoclavata Mann, 1925
* Navicula pseudoclementis Hustedt, 1952
* Navicula pseudococconeiformis Poretzky, 1925
* Navicula pseudocomides Hendey, 1964
* Navicula pseudoconcamerata Maillard, 1978
* Navicula pseudoconfervacea Manguin, 1952
* Navicula pseudoconstans Foged, 1968
* Navicula pseudocontenta Manguin in Bourrelly & Manguin, 1952
* Navicula pseudocrassirostris Hustedt, 1961
* Navicula pseudocryptocephala Foged, 1958
* Navicula pseudocurta Cholnoky, 1955
* Navicula pseudocurta Manguin, 1962
* Navicula pseudocuspidata Gandhi
* Navicula pseudodahurica H. Kobayasi in Kobayasi & al., 1977
* Navicula pseudodemararae Hustedt in Schmidt & al., 1930
* Navicula pseudodemerae
* Navicula pseudodicephala Fritsch & Rich, 1929
* Navicula pseudodispensata Manguin, 1964
* Navicula pseudodispersa Schrader, 1969
* Navicula pseudodissipata H. Kobayasi in Kobayasi & al., 1977
* Navicula pseudoexilissima Hustedt, 1962
* Navicula pseudofaceta Guermeur, 1954
* Navicula pseudoforcipata Hustedt, 1942
* Navicula pseudofossalis Krasske, 1948
* Navicula pseudofrickia Patrick, 1959
* Navicula pseudofrugalis H.P. Gandhi, 1998
* Navicula pseudofusca Pantocsek, 1886
* Navicula pseudogamma Giffen, 1967
* Navicula pseudogastrum Aleem, 1958
* Navicula pseudogemmata Pantocsek, 1892
* Navicula pseudoglacialis
* Navicula pseudogracilis Hustedt, 1927 †
* Navicula pseudogracilis Skvortzow, 1937
* Navicula pseudographa Manguin, 1952
* Navicula pseudogrimmei Compère, 1970
* Navicula pseudohalophila Cholnoky, 1960
* Navicula pseudohamulata Guermeur, 1964
* Navicula pseudohasta E.Manguin ex Kociolek & Reviers, 1996
* Navicula pseudohasta Z. Levkov, M.B. Edlund & T. Nakov, 2008
* Navicula pseudohochstetteri M. Peragallo, 1929
* Navicula pseudohumilis Amossé, 1932
* Navicula pseudoincerta Giffen, 1970
* Navicula pseudoinflata Giffen, 1975
* Navicula pseudoingrata Manguin, 1964
* Navicula pseudoinsociabilis Manguin in Bourrelly & Manguin, 1949
* Navicula pseudokotschyi Lange-Bertalot, 1985
* Navicula pseudokrasskei Cholnoky, 1954
* Navicula pseudokryokonites M. Peragallo, 1921
* Navicula pseudolacertosa Cholnoky, 1966
* Navicula pseudolagerheimi H.P.Gandhi, 1967
* Navicula pseudolanceolata Lange-Bertalot, 1980
* Navicula pseudolapidosa Manguin, 1964
* Navicula pseudolinearis Hustedt, 1922
* Navicula pseudolitoricola Hakansson, 1980
* Navicula pseudolucidula Guermeur, 1954
* Navicula pseudomastogloia Fontell in Ms. ex Cleve-Euler, 1953
* Navicula pseudomediopartita Schrader, 1969
* Navicula pseudomembranacea Cleve-Euler, 1952
* Navicula pseudomenisculus J.R.Carter, 1981
* Navicula pseudominuscula Fusey, 1950
* Navicula pseudomitis Hustedt, 1950
* Navicula pseudomuraliformis Simonsen, 1987
* Navicula pseudomuralis Hustedt, 1937
* Navicula pseudomutica Hustedt, 1955
* Navicula pseudomuticopsis Stone in McLaughlin & Stone, 1986
* Navicula pseudonaumannii Manguin, 1964
* Navicula pseudonivalis Bock, 1970
* Navicula pseudonony Hustedt, 1955
* Navicula pseudony Hustedt, 1955
* Navicula pseudopalpebralis Hendey, 1964
* Navicula pseudoparunculus Hustedt, 1952
* Navicula pseudopelliculosa Manguin, 1952
* Navicula pseudopima Hustedt, 1954
* Navicula pseudoplacentula Foged & Moller, 1968
* Navicula pseudoporifera Hustedt, 1952
* Navicula pseudoppugnata Lange-Bertalot & Miho, 2001
* Navicula pseudoquadratarea Heiden in Schmidt & al., 1905
* Navicula pseudoramphoides Stone in McLaughlin & Stone, 1986
* Navicula pseudoreinhardti Patrick, 1959
* Navicula pseudoretusa Peragallo & Peragallo, 1897
* Navicula pseudorhynchocephala Poretzky ex Proschkina-Lavrenko, 1950
* Navicula pseudorhynchocephala Poretzky, 1953
* Navicula pseudorthoneoides Foged, 1975
* Navicula pseudorupicola Fusey, 1953
* Navicula pseudosalinarum Giffen, 1975
* Navicula pseudoschumanniana Hustedt, 1914
* Navicula pseudoscutiformis Hustedt, 1930
* Navicula pseudosemilyrata R.Simonsen, 1959
* Navicula pseudoseminulum Skvortzow, 1935
* Navicula pseudosepta Patrick, 1961
* Navicula pseudosilicula Hustedt
* Navicula pseudosiliculaoides Foged, 1968
* Navicula pseudostauropteroides Fritsch & Rich, 1929
* Navicula pseudostrearia Aleem, 1973
* Navicula pseudostundlii Barber & Carter, 1971
* Navicula pseudosubtilis Fusey, 1964
* Navicula pseudosubtilissima Manguin in Bourrelly & Manguin, 1952
* Navicula pseudosydowii Schoeman & Archibald, 1988
* Navicula pseudotamnaena Guermeur, 1954
* Navicula pseudotantula Guermeur, 1954
* Navicula pseudotemeraria Schoeman, 1973
* Navicula pseudotenelloides Cholnoky, 1955
* Navicula pseudotenelloides Krasske, 1938
* Navicula pseudotenelloides Maillard, 1966
* Navicula pseudotenera Manguin, 1962
* Navicula pseudothienemanni H.P.Gandhi, 1967
* Navicula pseudotuscula Hustedt, 1943
* Navicula pseudotuscula sensu Brockman, 1950
* Navicula pseudoventosa Schoeman, 1973
* Navicula pseudoventralis Hustedt, 1936
* Navicula pseudowiesneri Chudaev & Kulikovskiy, 2016
* Navicula psychrophila Grunow
* Navicula pterophena (Ehrenberg) De Toni, 1891
* Navicula puacivistata Patrick, 1959
* Navicula puchella sensu Heiden & Kolbe, 1928
* Navicula pudens Mann, 1925
* Navicula pudibundus Foged, 1971
* Navicula pudica Cholnoky, 1959
* Navicula puella A.Schmidt, 1875
* Navicula puella Peragallo & Peragallo, 1897
* Navicula puella Schumann, 1867
* Navicula pugio Mann, 1925
* Navicula pulchella Heiden
* Navicula pulcherrima Leuduger-Fortmorel ex Tempère & Peragallo, 1915
* Navicula pulchra Gregory, 1856
* Navicula pulchripora Kaczmarska & Chan, 1995
* Navicula pullus Hustedt, 1955
* Navicula pulverea Cholnoky, 1963
* Navicula pulverentula Woodhead & Tweed, 1960
* Navicula pulvulenta Mann, 1925
* Navicula pumilio Ehrenberg, 1841 †
* Navicula punctata O'Meara, 1872
* Navicula punctata W. Arnott in litt. ex Brébisson, 1870
* Navicula punctatula
* Navicula puncticulata Skvortzov, 1976
* Navicula punctifera Hustedt, 1952
* Navicula punctigera Hustedt, 1955
* Navicula punctulata Ehrenberg, 1842
* Navicula punctulata W.Smith, 1853
* Navicula pungens Cleve-Euler, 1953
* Navicula pupilla Manguin in Bourrelly & Manguin, 1952
* Navicula pupula Bristol, 1920
* Navicula pupuloides Cholnoky, 1955
* Navicula pupuloides Guermeur, 1954
* Navicula puschii Missuna, 1914
* Navicula pusilla sensu Donkin, 1870
* Navicula pusilloides Compère, 1967
* Navicula pusio sensu Mayer, 1919
* Navicula pusioides Foged, 1981
* Navicula pygmaea Frenguelli, 1923
* Navicula pygmaea Kützing, 1849
* Navicula pygmaeformis Kobayasi, 1968
* Navicula pyrenaica W. Smith, 1857 (1858)
* Navicula quadrangulis H. Kobayasi, 1964
* Navicula quadrata Gregory, 1856
* Navicula quadricostata Ehrenberg, 1838
* Navicula quadrifasciata Ehrenberg, 1840
* Navicula quadrilineata Grunow, 1879
* Navicula quadrimaculata Manguin, 1964
* Navicula quadripartita Hustedt, 1934
* Navicula quadripedis Cleve-Euler, 1952
* Navicula quadripuctata Hustedt, 1950
* Navicula quadriseriata Cleve & Grunow in Cleve, 1881
* Navicula quadrisinuata Quint in Hustedt, 1930
* Navicula quadrisulcata Grunow, 1867 (1870)
* Navicula quadriundulata Hustedt in Schmidt & al., 1934
* Navicula quadriundulata Manguin, 1941
* Navicula quadriundulata Meister, 1932
* Navicula quaesita Cholnoky, 1968
* Navicula quarnerensis Grunow
* Navicula quarnerensoides Hustedt, 1961
* Navicula quasidisjuncta Lange-Bertalot & U.Rumrich
* Navicula quaterna A. Berg, 1952
* Navicula quaternaria D.E. Kellogg, M. Stuiver, T.B. Kellogg & G.H. Denton, 1980
* Navicula quechua Lange-Bertalot & U.Rumrich
* Navicula quercyana Guermeur & Manguin, 1953
* Navicula quincunx Cleve, 1891
* Navicula quinquenodis Grunow, 1860
* Navicula quintiana Pantocsek & Greguss in Greguss, 1913
* Navicula quodest Cholnoky, 1960
* Navicula rabenhorstiana Hilse in Rabenhorst, 1859
* Navicula rabenhorstii Ralfs in Pritchard, 1861
* Navicula radians Héribaud-Joseph, 1903 †
* Navicula radiata Leuduger-Fortmorel, 1892
* Navicula radiopunctata Hustedt in Schmidt & al., 1934
* Navicula radiosa Kützing, 1844
* Navicula radiosaeformis Manguin in Bourrelly & Manguin, 1952
* Navicula radiosafallax Lange-Bertalot, 1993
* Navicula radiosiola Lange-Bertalot, 1993
* Navicula radiostriata Hustedt, 1936
* Navicula rainierensis Sovereign, 1963
* Navicula rajmundii A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
* Navicula rakowskae Lange-Bertalot, 2001
* Navicula ramingensis Handmann, 1913
* Navicula ramosissima (C.Agardh) Cleve, 1895
* Navicula ramosissimoides Gandhi, 1970
* Navicula ramphoides Pantocsek, 1889
* Navicula rancurellii Amossé, 1970
* Navicula rapsonii Cholnoky, 1959
* Navicula rara Ehrenberg, 1854
* Navicula rara Frenguelli, 1938
* Navicula rara Hustedt, 1934
* Navicula rarissima Bennett & Kociolek in Kociolek & al., 2014
* Navicula rasa Pantocsek, 1913
* Navicula rattrayi Pantocsek, 1889
* Navicula rauhii Manguin, 1964
* Navicula rautenbachiae Cholnoky, 1957
* Navicula ravinae Cholnoky, 1960
* Navicula recava Hohn & Hellerman, 1963
* Navicula recognita Torka, 1933
* Navicula recondita Hustedt, 1942
* Navicula recta Brun & Héribaud in Héribaud, 1893
* Navicula rectalineata Meister, 1934 (1935)
* Navicula rectangularis
* Navicula rectangulata Gregory, 1857
* Navicula recurvata Gran, 1900
* Navicula regata Hanna & Grant, 1926
* Navicula regelii Krieger, 1944
* Navicula regressa Hustedt in Schmidt & al., 1934
* Navicula regula Grunow & Cleve
* Navicula regularis Hustedt
* Navicula reichardtiana Lange-Bertalot, 1989
* Navicula reichardtii Grunow, 1880
* Navicula reihardtii
* Navicula reimeri Gandhi, 1970
* Navicula reimeri Patrick & Freese, 1961
* Navicula reimerites VanLandingham, 1964
* Navicula reinhardtii (Grunow) Grunow in Van Heurck, 1880
* Navicula reinickeana Rabenhorst, 1859
* Navicula reissii Lee, Reimer & McEnery, 1980
* Navicula relicta McCall, 1933
* Navicula remota Grunow, 1880
* Navicula renauldi Héribaud-Joseph
* Navicula repentina Krasske, 1949
* Navicula resecta J.R.Carter, 1981
* Navicula reservata Cholnoky, 1968
* Navicula residua Schmidt in Schmidt & al., 1876
* Navicula restituta A.Schmidt ex Cleve & Moller, 1878
* Navicula reticulata Grunow, 1867
* Navicula reticulata Mereschkowsky, 1901
* Navicula reticuloradiata Tempère & Brun in Brun & Tempère, 1889
* Navicula retinenda Schmidt in Schmidt & al., 1897
* Navicula retracta Meister, 1937
* Navicula retrica Carter & Denny, 1982
* Navicula retrocurvata J.R.Carter ex R.Ross & P.A.Sims, 1978
* Navicula retrostauros Mann, 1925
* Navicula retusa H. Lange-Bertalot & K. Bonik, 1976
* Navicula retusa sensu Cleve & Grunow, 1880
* Navicula retusa sensu Van Heurck, 1885
* Navicula reusii Pantocsek, 1892
* Navicula reversa Hustedt, 1952
* Navicula reversa Mann, 1925
* Navicula rho Cleve, 1895
* Navicula rhodana M.H.Hohn & Hellerman, 1963
* Navicula rhombea Ehrenberg, 1843
* Navicula rhombica Gregory, 1855 †
* Navicula rhombica sensu Donkin, 1872
* Navicula rhombicula Hustedt, 1962
* Navicula rhombiformis Gandhi, 1959 (1960)
* Navicula rhombiformis Hustedt, 1944
* Navicula rhomboidea Castracane, 1878
* Navicula rhombulus Schumann, 1867
* Navicula rhombus Petit, 1877
* Navicula rhynchocephala Kützing, 1844
* Navicula rhynchocephaloides Frenguelli, 1941
* Navicula rhynchocephaloides Hustedt in Schmidt & al., 1930
* Navicula rhynchotella Lange-Bertalot, 1993
* Navicula ricardae Lange-Bertalot, 2001 †
* Navicula ricardii Germain, 1981
* Navicula richardsoniana O'Meara, 1876
* Navicula ridelii Cleve-Euler, 1953
* Navicula riediana Lange-Bertalot & Rumrich, 2000
* Navicula rimosa Ehrenberg, 1838
* Navicula rimosa Greville, 1866
* Navicula riojae Cleve
* Navicula riotecensis Metzeltin & Lange-Bertalot, 1998
* Navicula ripageriensis Renault, 1903
* Navicula riparia Hustedt, 1942
* Navicula riparta Carter, 1966
* Navicula rivalis M.H.Hohn & Hellerman, 1963
* Navicula rivularis Hustedt, 1942
* Navicula rivulensis Patrick & Freese, 1961
* Navicula rivulorum H. Lange-Bertalot & Rumich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
* Navicula robertsii Patrick & Freese, 1961
* Navicula robertsoniana
* Navicula robusta Ehrenberg, 1840
* Navicula robusta Grunow, 1877
* Navicula robusta Pantocsek, 1889
* Navicula rogallii Hustedt, 1961
* Navicula rogersii Giffen, 1964
* Navicula rolandii Wunsam, Witkowski & Lange-Bertalot in Witkowski, Lange-Bertalot & Stachura, 1998
* Navicula romanowii Pantocsek, 1902
* Navicula romanum Ehrenberg, 1854
* Navicula rosenbergii Østrup, 1910
* Navicula rossi Salah, 1955
* Navicula rossiana Mayer, 1931
* Navicula rostellaria Schmidt, 1874
* Navicula rostellifera O'Meara, 1876
* Navicula rostelloides Østrup, 1910
* Navicula rostellum W. Smith, 1856
* Navicula rostellum sensu Ostrup, 1895
* Navicula rostochiensis Heiden in Schmidt & al., 1903
* Navicula rostrata Ehrenberg, 1840
* Navicula rostrata Frenguelli, 1929
* Navicula rostrata W. Smith Ms., Gregory, 1856
* Navicula rotaeana (Rabenhorst) Grunow, 1880
* Navicula rotesta Carter, 1970
* Navicula rotula A.Cleve, 1953
* Navicula rotunda Andrews, 1966
* Navicula rotunda Hustedt, 1945
* Navicula rotundata Hantzsch fide Grunow in Van Heurck, 1880
* Navicula rotundata Hantzsch in Rabenhorst, 1862
* Navicula rotundella Andrews, 1968
* Navicula rouxioidea Sheshukova-Poretskaya, 1967
* Navicula rovignensis Grunow in Cleve & Möller, 1879
* Navicula rudiformis Hustedt, 1964
* Navicula rudis Cleve
* Navicula rufisquiana Guermeur, 1954
* Navicula rugosa Janisch, 1888
* Navicula rugula M.H.Hohn & Hellerman, 1963
* Navicula rumaniensis Hustedt in Schmidt & al., 1934
* Navicula runtuensis Cholnoky, 1966
* Navicula rupestris O'Meara, 1876
* Navicula rupicola Hustedt, 1937
* Navicula rusticensis Lobban, 1984
* Navicula ruttneri Hustedt, 1937
* Navicula sabiniana R.M.Patrick, 1959
* Navicula sacrophagus H.P.Gandhi ex Karthick, 2020
* Navicula saeptata Jurilj, 1957
* Navicula safana Fusey, 1966
* Navicula sagitta M.H.Hohn & Hellerman, 1963
* Navicula sahyadrensis Sarode & Kamat, 1984
* Navicula salaria Patrick & Freese, 1961
* Navicula salebrosa Cholnoky, 1963
* Navicula salinaroides Cholnoky, 1963
* Navicula salinarum Grunow, 1880
* Navicula salinarum sensu Pantocsek, 1902
* Navicula salinicola Hustedt, 1939
* Navicula salsa Patrick & Freese, 1961
* Navicula salva Schmidt in Schmidt & al., 1876
* Navicula sambiensis Schumann, 1867
* Navicula samoensis Grunow, 1877
* Navicula samrai Salah, 1955
* Navicula sanctaecrucis Østrup, 1913
* Navicula sancti caroli Pantocsek, 1902
* Navicula sancti-naumii Z.Levkov & D.Metzeltin, 2007
* Navicula sanctibenedicti Pantocsek, 1902
* Navicula sanctinoberti Lacsny, 1917
* Navicula sanctithomae Cleve, 1878
* Navicula sandegrenii Cleve-Euler, 1922
* Navicula sandriana Grunow, 1863
* Navicula sandriana sensu Schmidt in Schmidt & al., 1881
* Navicula sansegana Grunow, 1875
* Navicula sansomei Foged, 1966
* Navicula santacrux Brun, 1896
* Navicula santapauii Suxena & Venkateswarlu, 1968
* Navicula sapeloensis Williams, 1962
* Navicula saprophila Lange-Bertalot & Bonik, 1976
* Navicula sarmatica Schljapina ex Makarova & Kozyrenko, 1966
* Navicula sarolata J.R.Carter & P.Denny, 1982
* Navicula satura Schmidt in Schmidt & al., 1876
* Navicula saugerri
* Navicula sauvis
* Navicula savannae Ehrenberg
* Navicula saxicola E.Manguin ex J.P.Kociolek & B.Reviers, 1996
* Navicula saxophila W.Bock ex Hustedt, 1966
* Navicula scabellum Hustedt, 1942
* Navicula scala Hohn & Hellerman, 1966
* Navicula scalarifer Brun, 1891
* Navicula scalpellum Kützing, 1849
* Navicula scalpia Carter, 1966
* Navicula scalprum Ehrenberg, 1836
* Navicula scalprum Gaillon, 1827
* Navicula scalprum Kützing, 1844
* Navicula scandinaviae Ehrenberg, 1875 (1876)
* Navicula scaniae Van de Vijver, Jarlman & Lange-Bert., 2010
* Navicula scanica Cleve-Euler, 1952
* Navicula scela Carter & Denny, 1982
* Navicula schaarschmidtii Pantocsek, 1886
* Navicula schadei Krasske, 1929
* Navicula schadeiformis Foged, 1972
* Navicula schaeferi Hustedt, 1964
* Navicula schaferi Hustedt In Rabenhorst, 1964
* Navicula schefterae Lobban, 1986
* Navicula schilberszkyi Pantocsek
* Navicula schinzii Brun, 1891
* Navicula schiracka Skabichevskii, 1936
* Navicula schirschowii Seczkina, 1956
* Navicula schizonemoides Kisselev, 1930
* Navicula schleinitzii Janisch in Schmidt & al., 1881
* Navicula schmassmanni Hustedt in Schmidt & al., 1934
* Navicula schmassmanni Hustedt, 1943
* Navicula schmidti
* Navicula schmidtiana Grunow in Schmidt & al., 1876
* Navicula schmidtii Lagerst., 1876
* Navicula schmidtii O'Meara, 1875
* Navicula schneideri Grunow, 1878
* Navicula schoemaniana Foged, 1975
* Navicula schomburgkorum Ehrenberg, 1845
* Navicula schonfeldii Hustedt, 1930
* Navicula schonfeldtii
* Navicula schonkenii Hustedt, 1955
* Navicula schroeteri Meister, 1932
* Navicula schubartii Hustedt, 1952
* Navicula schuettii Van Heurck
* Navicula schultzei C.H.Kain
* Navicula schultzii
* Navicula schulzii Cleve, 1895
* Navicula schumannii Nathorst, 1894
* Navicula schuttii
* Navicula schwabei Krasske, 1939
* Navicula schweickerdtii Cholnoky, 1954
* Navicula schweinfurthi A.W.F.Schmidt, 1876
* Navicula scintillans Schmidt in Schmidt & al., 1881
* Navicula scintillans Tempère & Brun in Brun & Tempère, 1889
* Navicula scintillosa Manguin in Bourrelly & Manguin, 1949
* Navicula scirpus J.R.Carter, 1981
* Navicula scita W. Smith, 1857 (1858)
* Navicula scoliopleura Schmidt in Schmidt & al., 1876
* Navicula scoliopleuroides Quint in Hustedt, 1930
* Navicula scopulorum sensu Cleve, 1894
* Navicula scoresbyi Foged, 1964
* Navicula scotica A.Schmidt, 1876
* Navicula scottiae Cholnoky & Claus, 1961
* Navicula scutelliformis
* Navicula scutelloides W.Smith, 1856
* Navicula scutula Hohn, 1961
* Navicula scutum Schumann, 1862
* Navicula scutum sensu Cleve-Euler in Backman & Cleve-Euler, 1922
* Navicula scythica Pantocsek, 1892
* Navicula secernenda A.W.F.Schmidt, 1876
* Navicula secreta Pantocsek, 1902
* Navicula sectilis A.W.F.Schmidt
* Navicula secura R.M.Patrick, 1959
* Navicula seductilis A.Schmidt, 1874
* Navicula seibigiana Lange-Bertalot, 1993
* Navicula seibigii Lange-Bertalot, 1991
* Navicula seippiana Lange-Bertalot & Steindorf in Moser, Steindorf & Lange-Bertalot, 1995
* Navicula sejuncta A.Schmidt, 1874
* Navicula semen Ehrenberg, 1843
* Navicula semenoides Hustedt, 1927
* Navicula semiaperta Hustedt, 1936
* Navicula semiarea Meister, 1934 (1935)
* Navicula semicruciata Ehrenberg, 1843
* Navicula semidecora Brun, 1896
* Navicula semidiversa Manguin ex Kociolek & Reviers, 1996
* Navicula semifasciata Østrup, 1918
* Navicula semihyalina Bock, 1970
* Navicula semiinflata Østrup, 1895
* Navicula semilyrata R.Simonsen, 1959
* Navicula seminoides Cleve & Grove, 1894
* Navicula seminuda C. Jao & Y.Y. Lee in Jao, Zhu & Y.Y. Lee, 1974
* Navicula seminuda Meister, 1937
* Navicula seminularia Cholnoky, 1966
* Navicula seminuloides Hustedt, 1937
* Navicula seminulum Ehrenberg, 1842
* Navicula seminulum sensu Schumann, 1862 (1863)
* Navicula semipronia Perty, 1849
* Navicula semipronia Perty, 1852
* Navicula semistauros Mann, 1925
* Navicula semistriata Østrup, 1895
* Navicula semitecta Schmidt, 1874
* Navicula semivirgata Krasske, 1929
* Navicula semota Schmidt in Schmidt & al., 1897
* Navicula senegalensis Ehrenberg, 1854
* Navicula senegalensis Guermeur, 1954
* Navicula senjoensis H. Kobayasi in Ando, Haraguchi & H. Kobayasi, 1971
* Navicula sennenii M. Peragallo in Heribaud & al., 1920
* Navicula senonquei M. Peragallo, 1921
* Navicula sentechii Diakonova-Savelieva, 1929
* Navicula sentelloides Smith
* Navicula separabilis Schmidt in Schmidt & al., 1875
* Navicula sepasiensis Foged, 1966
* Navicula seposita Hustedt, 1942
* Navicula septata Hustedt
* Navicula septata Proschkina-Lavrenko, 1963
* Navicula septataeoides Hustedt, 1966
* Navicula septenaria Bailey, 1862
* Navicula septentrionalis (Grunow) Gran, 1908
* Navicula septentrionalis Cleve, 1896
* Navicula septentrionalis Østrup, 1897
* Navicula septifera Proschkina-Lavrenko, 1967
* Navicula sequens H.G.Barber & J.R.Carter, 1971
* Navicula serdicensis H. Lange-Bertalot & D. Metzeltin, 2006
* Navicula serena Frenguelli, 1941
* Navicula serica Schimanski, 1978
* Navicula sericea Cholnoky, 1961
* Navicula seriosa Pantocsek, 1892
* Navicula serpentina McCall, 1933
* Navicula serratula Grunow in Schmidt & al., 1875
* Navicula setanensis Okuno, 1959
* Navicula setschwanensis Skuja, 1937
* Navicula setzeri Patrick & Freese, 1961
* Navicula severascens Cholnoky, 1960
* Navicula severini Nicolucci, 1842
* Navicula shackletonii W.West & G.S.West, 1911
* Navicula shanwangensis J.-Y. Li, 1982 †
* Navicula shengxianensis Huang in Huang & Cai, 1984
* Navicula shiloi J.J. Lee, C.W. Reimer & M.E. McEnery, 1980
* Navicula siamensis Østrup, 1904
* Navicula siberica Skvortzow, 1929
* Navicula sibirica Skvortzov, 1929
* Navicula sicula Ehrenberg, 1839
* Navicula sideralis Brun in Schmidt & al., 1892
* Navicula sieboldii Pantocsek, 1892
* Navicula sieminskiae Lange-Bertalot & Witkowski, 2001
* Navicula sigma Brun, 1891
* Navicula sigma Ehrenberg, 1833
* Navicula sigmaraphis Round, 1961
* Navicula sigmoidea (Nitzsch) Ehrenberg, 1832
* Navicula signatula Hustedt, 1964
* Navicula silenda Hohn, 1966
* Navicula silens Cholnoky, 1959
* Navicula silicea Skvortzow, 1937
* Navicula silicina Kisselev, 1931
* Navicula silicula Ehrenberg, 1843
* Navicula silicula sensu Grunow in Van Heurck, 1880
* Navicula silvahercynia Lange-Bertalot in Lange-Bertalot & Krammer, 1989
* Navicula silvatica Cholnoky, 1959
* Navicula silvestrina
* Navicula silvicola Cholnoky, 1966
* Navicula sima Ehrenberg, 1845
* Navicula simbirskiana Pantocsek, 1889
* Navicula simiaevultus Brun, 1891
* Navicula simonii Heiden
* Navicula simplex Meister, 1937
* Navicula simplexoides H.P.Gandhi ex Karthick, 2020
* Navicula simplus Meister, 1937
* Navicula simula Patrick, 1959
* Navicula simulans Donkin, 1873
* Navicula simulata Manguin, 1942
* Navicula simulator Mann, 1925
* Navicula sinensis Ehrenberg, 1847
* Navicula singularis Maillard, 1978
* Navicula singularis Schmidt, 1876
* Navicula sinuata Schumann, 1867
* Navicula sinuiraphe Patrick & Freese, 1961
* Navicula sinuosa Ehrenberg, 1840
* Navicula siofokensis Pantocsek, 1902
* Navicula siofokensis sensu Fontell in Man., Cleve-Euler, 1953
* Navicula siolii Hustedt, 1952
* Navicula sipanguelensis Li, 1983
* Navicula sitiens Cholnoky, 1966
* Navicula sjoersii S.Busse & P.Snoeijs, 2002
* Navicula skabitschewsky
* Navicula skalenastriata Hohn, 1961
* Navicula sketechiensis Foged, 1966
* Navicula skiftei Foged, 1964
* Navicula skvortzowii Karajeva, 1971
* Navicula sleensis Simonsen, 1959
* Navicula slesvicensis Grunow, 1880
* Navicula smeerenburgensis Foged, 1964
* Navicula smithiana Rabenhorst, 1868
* Navicula smithii (Grunow) Hustedt, 1909
* Navicula smithii Brébisson, 1854
* Navicula smithii sensu Donkin, 1870
* Navicula smithii sensu Schmidt in Schmidt & al., 1875
* Navicula smithii sensu Van Heurck, 1880
* Navicula smolandica Cleve-Euler, 1953
* Navicula sniadeckii Missuna, 1914
* Navicula sobralensis Zimmermann, 1918
* Navicula sobria Cholnoky, 1963
* Navicula sobrina Mann, 1937
* Navicula socialis T.C.Palmer, 1910
* Navicula soederlundii Cleve in Cleve & Moller, 1878
* Navicula sohrensis
* Navicula solaris Gregory, 1856
* Navicula solaris Schmidt in Schmidt & al., 1876
* Navicula soleta Cholnoky, 1959
* Navicula solida Cleve in Cleve & Grunow, 1880
* Navicula solitaria Cleve, 1896
* Navicula soluta Cholnoky, 1968
* Navicula soluta Frenguelli, 1941
* Navicula solutepunctata Hustedt, 1939
* Navicula solutina Schoeman in Schoeman & Meaton, 1982
* Navicula soochowensis Skvortzow, 1946
* Navicula soodensis Krasske, 1927
* Navicula sorella M.H.Hohn & Hellerman, 1963
* Navicula sorriensis Foged, 1966
* Navicula sovereignae Hustedt, 1955
* Navicula sovereignii L.L.Bahls, 2011
* Navicula sovereignoides Stone in McLaughlin & Stone, 1986
* Navicula sparsipunctata Grove & Sturt, 1886
* Navicula sparsistriata Hustedt, 1964
* Navicula spartinetensis Sullivan & Reimer, 1975
* Navicula spathifera Grove & Sturt in litt. Grunow, 1888
* Navicula spathula Brun, 1891
* Navicula spatiata Østrup, 1918
* Navicula speciosa Hustedt, 1913
* Navicula speciosa Mann, 1907
* Navicula spectabilis Gregory, 1857
* Navicula spectabilis Greville in A. Schmidt, 1874
* Navicula spectabilis Grunow, 1860
* Navicula spectataissima Greville, 1866
* Navicula spectrum Manguin, 1952
* Navicula specululum Witkowski, 1994
* Navicula speibonae Giffen, 1970
* Navicula spencerii Bailey ex Quekett, 1848
* Navicula sperkiana Reinhard, 1870
* Navicula sphaerocephala Cleve-Euler, 1953
* Navicula sphaerophora Ehrenberg, 1843
* Navicula sphaerophora Geitler, 1927
* Navicula sphaerophora sensu Donkin, 1871
* Navicula sphagnicola Fusey, 1948
* Navicula sphagnophila Krasske, 1948
* Navicula spicoides Fusey, 1951
* Navicula spiculifera A. Mann, 1925
* Navicula spina
* Navicula spinifera W.Bock, 1970
* Navicula spiralis O'Meara, 1872
* Navicula spirans Hustedt, 1934
* Navicula spirata Hustedt, 1937
* Navicula spissata Manguin in Bourrelly & Manguin, 1954
* Navicula splendens Schwartz in Rabenhorst, 1877
* Navicula splendicula Van Landingham, 1975
* Navicula splendida Ehrenberg, 1832
* Navicula splendidula Hustedt & Krasske, 1949
* Navicula sponsa J.R.Carter, 1964
* Navicula sponsalia Giffen, 1971
* Navicula spuma Mann, 1907
* Navicula spuria Cleve, 1896
* Navicula st. thomae Cleve, 1878
* Navicula stabilis F. Adams collection, 1934
* Navicula stachurae A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
* Navicula stagna J.Y.Chen & H.Z.Zhu
* Navicula stagnalis Skvortzov, 1937
* Navicula staminea Cholnoky, 1968
* Navicula standeri Cholnoky, 1957
* Navicula standeriella Archibald, 1966
* Navicula stankovici Hustedt, 1945
* Navicula starmachii A.Witkowski & Lange-Bertalot
* Navicula starmachii Kaczmarska, 1976
* Navicula starmachioides A. Witkowski & H. Lange-Bertalot in D. Metzeltin & A. Witkowski, 1996
* Navicula staurifera Thomas, 1886
* Navicula stauroneiformis Elmore, 1921
* Navicula stauroneiformis Leuduger-Fortmorel, 1892
* Navicula stauroneiformis M. Peragallo, 1921
* Navicula stauroneiformis Manguin, 1949
* Navicula stauroneiformis Wolle, 1890
* Navicula stauroptera Schumann, 1867
* Navicula stauropteroides F.E.Fritsch, 1912
* Navicula stehlei Manguin in Bourrelly & Manguin, 1952
* Navicula stephanssoni Foged, 1974
* Navicula stercusmuscarum Cleve, 1895
* Navicula steuropleura
* Navicula stigmata Frenguelli
* Navicula stigmata Rich, 1937
* Navicula stigmatifera J.John, 1981
* Navicula stippi Hanna & Grant, 1926
* Navicula stoermeri Kociolek & Reviers, 1996
* Navicula stokesiana O'Meara, 1876
* Navicula stolida Krasske, 1939
* Navicula stompsii Cholnoky, 1963
* Navicula stradneri Hajós, 1974
* Navicula strangulata Greville, 1866
* Navicula streckerae Lange-Bertalot & Witkowski, 2000
* Navicula strenzkei Hustedt, 1962
* Navicula striata Filarszky, 1900
* Navicula striola Prudent, 1907
* Navicula striolata (Grunow) Lange-Bertalot, 1985
* Navicula stroemii Hustedt, 1931
* Navicula stroemii sensu Foged, 1958
* Navicula structa Lange-Bertalot & Steindorf in Moser, Steindorf & Lange-Bertalot, 1995
* Navicula struggeri Cholnoky, 1963
* Navicula stundlii Hustedt, 1959
* Navicula stuxbergii Cleve
* Navicula stygia Cleve-Euler, 1934
* Navicula stylus Ehrenberg, 1842
* Navicula styriaca Grunow, 1880
* Navicula styriaca Pantocsek, 1892
* Navicula suavis Cleve & Grove, 1894
* Navicula sub-kawamurae Skvortzow, 1971
* Navicula subacuta (Ehrenberg) Ralfs, 1861
* Navicula subacutis Foged, 1971
* Navicula subadnata Hustedt, 1942
* Navicula subagnita Proschkina-Lavrenko, 1963
* Navicula subagrestis Guermeur, 1954
* Navicula subalata Grunow in Cleve & Grunow, 1880
* Navicula subalpina Reichardt, 1988
* Navicula subantarctica Frenguelli, 1938
* Navicula subarvensis Hustedt, 1942
* Navicula subarvensoides Archibald, 1966
* Navicula subatomoides Hustedt, 1936
* Navicula subbacillum Hustedt, 1937
* Navicula subbengalensis Gandhi, 1970
* Navicula subbottnica A.Witkowski & Lange-Bertalot, 2009
* Navicula subcancellata Hustedt in Schmidt & al., 1934
* Navicula subcincta A.Schmidt, 1874
* Navicula subcincta Grunow, 1884
* Navicula subcingulata Cholnoky, 1963
* Navicula subclementis Hustedt, 1952
* Navicula subcoccus Cholnoky, 1960
* Navicula subconcentrica Lange-Bertalot, 2001
* Navicula subcontenta Hustedt
* Navicula subcontenta Krieger, 1943
* Navicula subcontracta Cleve-Euler, 1953
* Navicula subconveniens Hustedt, 1952
* Navicula subcrassirostris Hustedt, 1961
* Navicula subcreta Frenguelli, 1941
* Navicula subcuneata Østrup, 1910
* Navicula subdapaliformis Gandhi, 1970
* Navicula subdecipiens De Toni, 1891
* Navicula subdecussis Hustedt, 1942
* Navicula subdeliberata Manguin, 1964
* Navicula subdelicata Hustedt in Schmidt & al., 1934
* Navicula subdicephala Hustedt
* Navicula subdiffusa Hustedt, 1955
* Navicula subdigna Gandhi, 1970
* Navicula subdilucida Cholnoky, 1959
* Navicula subdirecta Cleve-Euler, 1953
* Navicula subdita Schmidt in Schmidt & al., 1897
* Navicula subdivisa Grunow in Cleve & Grunow, 1880
* Navicula subelata H.P.Gandhi, 1998
* Navicula subelliptica Cleve-Euler, 1953
* Navicula subelongata Skabichevskii, 1936
* Navicula subexilissima Carter, 1970
* Navicula subfasciata Pantocsek, 1912
* Navicula subfasciata Patrick, 1959
* Navicula subforcipata Hustedt, 1964
* Navicula subfortis Hustedt, 1954
* Navicula subfossalis Hustedt, 1934
* Navicula subfossilis Lichti-Federovich, 1980
* Navicula subfraudulenta Simonsen, 1987
* Navicula subfusca Pantocsek, 1892
* Navicula subgastriformis Hustedt, 1945
* Navicula subgastrum Hustedt in Schmidt & al., 1934
* Navicula subglabra Østrup, 1904
* Navicula subglobosa Gasse, 1980
* Navicula subgrimmei Messikommer, 1949
* Navicula subhastatula Z.Levkov & D.Metzeltin, 2007
* Navicula subhexagona Hustedt in Schmidt & al., 1934
* Navicula subhustedtii Cholnoky, 1960
* Navicula subhyalina Cleve-Euler, 1934
* Navicula subimpressa Grunow
* Navicula subinflata Grunow, 1883
* Navicula subinflatoides Hustedt, 1962
* Navicula subinsoensis Foged, 1966
* Navicula subirritans Giffen, 1970
* Navicula subirroratoides Hustedt, 1964
* Navicula sublanceolata H.P.Gandhi ex Karthick, 2020
* Navicula sublinearis Grunow, 1885
* Navicula sublucidula Hustedt, 1950
* Navicula sublyrata Grunow in Cleve, 1883
* Navicula subminuscula (Skvortzov, 2012)
* Navicula subminuscula Manguin, 1942
* Navicula submissa Zimmermann, 1918
* Navicula submitis Hustedt, 1945
* Navicula submolesta Hustedt, 1949
* Navicula submuralis Hustedt, 1945
* Navicula submuscicola Krasske, 1939
* Navicula submutica Fusey, 1964
* Navicula submuticoides N.Woodhead & R.D.Tweed, 1958
* Navicula subnuda A.W.F.Schmidt
* Navicula subnympharum Hustedt in Schmidt & al., 1936
* Navicula subocculta Hustedt
* Navicula suboscitans Mann, 1925
* Navicula subparallela
* Navicula subplacentula Hustedt, 1930
* Navicula subpolaris Hendey, 1937
* Navicula subprocera Hustedt, 1945
* Navicula subpupula Woodhead & Tweed, 1960
* Navicula subquadrata Schumann, 1867
* Navicula subradiosa Pantocsek
* Navicula subrecta Brébisson
* Navicula subretusa Grunow, 1885
* Navicula subretusa Peragallo & Peragallo, 1897-1908
* Navicula subrhombica Hustedt, 1922
* Navicula subrhombica Marsson, 1900
* Navicula subrhomboidea Castracane, 1886
* Navicula subrhynchocephala Hustedt, 1935
* Navicula subrostellata Hustedt, 1955
* Navicula subrotunda Schumann
* Navicula subrotundata Hustedt
* Navicula subsalsa Mereschkowsky, 1903
* Navicula subseminulum Hustedt, 1950
* Navicula subspectablis Hanna & Grant, 1926
* Navicula substauroneis Mann, 1925
* Navicula subsulcata Hustedt in Schmidt & al., 1936
* Navicula subsulcatoides Hustedt, 1987
* Navicula subtenelloides Cholnoky, 1958
* Navicula subtenuis Cleve-Euler, 1948
* Navicula subtilacea Cholnoky, 1960
* Navicula subtilis (Gregory) Ralfs
* Navicula subtilis Brebisson in Kutzing, 1849
* Navicula subtilissima Cleve, 1891
* Navicula subtilyra Cholnoky, 1963
* Navicula subtrophicatrix A.Tuji, 2003
* Navicula subula Kützing, 1844
* Navicula subulata Grunow
* Navicula subundulata Cleve & Grove, 1891
* Navicula subvalida Cholnoky, 1960
* Navicula subvasta Carter, 1970
* Navicula subvasta Hustedt, 1935
* Navicula subveneta Cleve-Euler, 1934
* Navicula subventraloides Guermeur, 1954
* Navicula subventricosa Grunow in Cleve & Grunow, 1880
* Navicula subviridula Z.Levkov, 2011
* Navicula subvitabunda Cholnoky, 1956
* Navicula subvulpina Hustedt
* Navicula subwalkeri Bahls & Potapova, 2015
* Navicula succincta Schmidt in Schmidt & al., 1881
* Navicula suchlandtii Hustedt, 1943
* Navicula suchlandtii sensu Foged, 1958
* Navicula suchlandtii sensu Krasske, 1949
* Navicula sudanensis Bastow, 1960
* Navicula sudora Schrader & Fenner, 1976
* Navicula suecica Ehrenberg, 1838
* Navicula suecicarum Van de Vijver, Jarlman & Lange-Bert. in Van de Vijver & Lange-Bertalot, 2009
* Navicula suffocata Mann, 1925
* Navicula suhinensis Foged, 1966
* Navicula sukatschevii Yakovlev, 1924
* Navicula sulcata Greville, 1865
* Navicula sulcata sensu Schmidt in Schmidt & al., 1897
* Navicula sulcifera Hustedt, 1955
* Navicula sulphurea J.Frenguelli & H.A.Orlando, 1958
* Navicula sulta Carter & Denny, 1982
* Navicula suluensis O'Meara, 1872
* Navicula sumatrensis Leuduger-Fortmorel, 1892
* Navicula sunkonensis N.Woodhead & R.D.Tweed, 1958
* Navicula superba Cleve
* Navicula supercilliaris Cholnoky, 1963
* Navicula supercontenta Cleve-Euler, 1948
* Navicula supergradata Brun, 1891
* Navicula supergregaria Rumrich & Lange-Bertalot, 2000
* Navicula superhasta Lange-Bertalot & D.Metzeltin, 2006
* Navicula superimposita Schmidt, 1874
* Navicula supleeorum L.Bahls, 2013
* Navicula supralitoralis Aleem & Hustedt, 1951
* Navicula suprinii Gerd Moser
* Navicula suriana Pantocsek & Greguss in Greguss, 1913
* Navicula surinamensis Cleve, 1895
* Navicula surirella Ehrenberg, 1881
* Navicula surirellae
* Navicula suspecta A.W.F.Schmidt
* Navicula suspica Carter & Denny, 1992
* Navicula suspirii Cholnoky, 1961
* Navicula sverdrupii Foged, 1964
* Navicula swaniana Moghadam, 1969
* Navicula sydowii Cholnoky, 1963
* Navicula symmetrica Patrick, 1944
* Navicula syrachii Foged, 1966
* Navicula syvertsenii Witkowski, Metzeltin & Lange-Bertalot in Metzeltin & Witkowski, 1996
* Navicula szaboi Pantocsek, 1889
* Navicula szlachetkoi A.Witkowski, C.Riaux-Gobin & G.Daniszewska-Kowalczyk, 2010
* Navicula szontaghii Pantocsek, 1886
* Navicula szontaghii sensu Peragallo & Peragallo, 1897
* Navicula söhrensis Krasske
* Navicula tabellaria (Ehrenberg) Kützing, 1844
* Navicula tabellaria sensu Donkin, 1872
* Navicula tabellariaeformis Krasske, 1939
* Navicula tabida Rylands Ms. ex Van Heurck, 1880
* Navicula tackei Hustedt, 1942
* Navicula taedens Cholnoky, 1968
* Navicula tagiana Patrick, 1970
* Navicula tahitensis Grunow, 1863
* Navicula tainensis Foged, 1966
* Navicula tairuaensis Foged, 1979
* Navicula takoradiensis Hendey, 1958
* Navicula tamanaena Guermeur, 1954
* Navicula tamanica Milovanova, 1955
* Navicula tambourense M. Peragallo in Héribaud & al., 1920
* Navicula tanakae H. Fukushima, T. Ko-Bayashi & S. Yoshitake, 2002
* Navicula tanganyikae G.S.West, 1907
* Navicula tanneri Cleve-Euler, 1934
* Navicula tantula Hustedt, 1943
* Navicula tantuloides Cholnoky, 1960
* Navicula taraxa Hohn & Hellerman, 1966
* Navicula taschenbergeri Schmidt in Schmidt & al., 1892
* Navicula tau Cleve, 1893
* Navicula tauta Carter & Denny, 1982
* Navicula taylori Salah, 1955
* Navicula tecta Marsson, 1900
* Navicula tectissima Lange-Bertalot, 1996 †
* Navicula teleta Hohn, 1966
* Navicula teletskoyensis Chudaev
* Navicula temeraria Cholnoky, 1965
* Navicula temniskovae H. Lange-Bertalot & D. Metzeltin, 2006
* Navicula temperei Brun in Brun & Tempère, 1889
* Navicula temperiana De Toni, 1891
* Navicula tenella sensu Schmidt in Schmidt te al., 1876
* Navicula tenellaeformis Hustedt, 1937
* Navicula tenelloides Hustedt, 1937
* Navicula tenera Hustedt, 1936
* Navicula tenera Hustedt, 1937
* Navicula teneroides Hustedt, 1956
* Navicula tenerrima Hustedt, 1937
* Navicula tennellaeformis Hustedt, 1937
* Navicula tennelloides
* Navicula tentata Cholnoky, 1966
* Navicula tenuirostris O'Meara, 1876
* Navicula tenuis Meister, 1937
* Navicula tenuissima Archibald, 1971
* Navicula terebrata Hustedt, 1944
* Navicula termes Ehrenberg
* Navicula termes sensu Schmidt in Schmidt & al., 1876
* Navicula terminata Hustedt, 1964
* Navicula termitina Ehrenberg, 1854
* Navicula terricola Bristol, 1920
* Navicula tersa Hustedt, 1956
* Navicula teschi Reinhold, 1937
* Navicula testata Hustedt, 1942
* Navicula testudo Ehrenberg, 1840
* Navicula texana R.M.Patrick, 1959
* Navicula thaitiana Castracane, 1886
* Navicula thallodes Proschkina-Lavrenko, 1955
* Navicula theelii Cleve in Cleve & Grunow, 1880
* Navicula theibaudii M. Peragallo, 1924
* Navicula theresiae Pantocsek, 1909
* Navicula thermalis De Toni, 1891
* Navicula thermalis Ehrenberg, 1840
* Navicula thermes Elmore, 1921
* Navicula thermicola J.B.Petersen, 1928
* Navicula theronii Cholnoky, 1954
* Navicula theta Cleve, 1893
* Navicula thienemanni Hustedt, 1937
* Navicula thienemannioides Gandhi, 1970
* Navicula thienemannoides Cholnoky, 1952
* Navicula thingvallae Østrup, 1918 †
* Navicula thomasii Hancock, 1973
* Navicula thomasii Schumann, 1862
* Navicula thorax Brun, 1891
* Navicula thoroddseni Foged, 1974
* Navicula thouleti Lauby, 1910
* Navicula thumii Pantocsek, 1886
* Navicula thurholmensis Juhlin-Dannfelt, 1882
* Navicula thuringiaca Rabenhorst, 1852, Alg. Sach.
* Navicula thuringica Kützing, 1844
* Navicula tibestiensis Amossé, 1934
* Navicula tientsinensis Skvortzow, 1927
* Navicula tignaria Hustedt, 1942
* Navicula tithonia Pantocsek, 1902
* Navicula tokiensis Cleve-Euler, 1953
* Navicula tokyoensis Kobayashi, 1968
* Navicula tolmani Hanna, 1927
* Navicula topia Pantocsek, 1902
* Navicula torellii Foged, 1964
* Navicula torganae D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
* Navicula torifera Hustedt, 1955
* Navicula torneensis Cleve, 1891
* Navicula torpedo Zimmermann, 1918
* Navicula torrendi
* Navicula torta D.G.Mann, 1924
* Navicula tortuosa Ehrenberg, 1843
* Navicula tortuosa Leuduger-Fortmorel, 1879
* Navicula tortura Cholnoky, 1960
* Navicula totarae Schrader, 1969
* Navicula toulaae Pantocsek, 1892
* Navicula toulaae sensu Brockmann, 1950
* Navicula toulaae Østrup in Hartz & Østrup, 1899
* Navicula towutiensis Cholnoky, 1963
* Navicula toxa J.R.Carter, 1960
* Navicula trabecula Ehrenberg, 1843
* Navicula tracery M.H.Hohn & Hellerman, 1963
* Navicula tranchet Turpin, 1828
* Navicula transistans
* Navicula transistantiodes Foged, 1975
* Navicula transitans Cleve, 1883
* Navicula translucens Mann, 1925
* Navicula translucida O'Meara, 1876
* Navicula transversa A.Schmidt, 1876
* Navicula transversa Bory de Saint-Vincent, 1824
* Navicula transversa Turpin, 1828 (1816-1829)
* Navicula transylvanica Pantocsek
* Navicula traucilola Guermeur
* Navicula triangulifera Héribaud, 1903
* Navicula trichoptera Foged, 1952
* Navicula triconfusa VanLandingham, 1975
* Navicula tridens Meunier, 1910
* Navicula tridentula Krasske, 1923
* Navicula tridentulaeformis Manguin in Bourrelly & Manguin, 1949
* Navicula trigibba Fresenius, 1862
* Navicula trigibba Lacsny, 1916
* Navicula trigibbula Schumann, 1867
* Navicula trigomirae Moura, 1963
* Navicula trigramma Fresenius, 1862
* Navicula trigranula Marsson, 1900
* Navicula trilatera L.Bahls, 2013
* Navicula trilineata Grove & Sturt, 1887
* Navicula trinkleri Meister, 1932
* Navicula trinodis Ehrenberg, 1837
* Navicula trinodis W.Smith, 1856
* Navicula trinodis sensu Lewis, 1861
* Navicula trinotata Pantocsek, 1892
* Navicula tripartita Heiden
* Navicula triplex VanLandingham, 1975
* Navicula tristitiae Schoeman, 1973
* Navicula tristriata Skvortzow, 1946
* Navicula trituberculata Prowse, 1962
* Navicula triundulata Grunow, 1867
* Navicula trivialis Lange-Bertalot, 1980
* Navicula trochus Ehrenberg, 1854
* Navicula trochus Schumann, 1863
* Navicula troglodytes Pantocsek, 1889
* Navicula trolopensis Frenguelli, 1942
* Navicula trophicatrix Lange-Bertalot, 1996
* Navicula trophicatrixoides Chudaev in Chudaev & Jüttner, 2020
* Navicula tropica Meister, 1934 (1935)
* Navicula tropicoidea Witkowski, Metzeltin & Lange-Bertalot in Metzeltin & Witkowski, 1996
* Navicula truanii Pantocsek, 1886
* Navicula truncata Cleve-Euler, 1915
* Navicula truncata Donkin, 1861
* Navicula truncata Kützing, 1844
* Navicula truncatula Hustedt, 1966
* Navicula trunculis Schumann, 1867
* Navicula trunculus Schumann, 1867
* Navicula truthi Pero, 1895
* Navicula tryblionella Yakovlev, 1923
* Navicula tschernyschevii Missuna, 1914
* Navicula tschuktschorum Cleve, 1883
* Navicula tsetsegmaae D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
* Navicula tsitsikammae Cholnoky, 1959
* Navicula tsukamotoi (Sterrenburg & Hinz) Yuhang Li & Kuidong Xu in Li & al., 2017
* Navicula tubulata Østrup, 1901
* Navicula tubulifera Geissler & Gerloff, 1964
* Navicula tubulosa J.Brun, 1895
* Navicula tugelae Cholnoky, 1956
* Navicula tugtoi Foged, 1971
* Navicula tulugakii Foged, 1971
* Navicula tumens W.Smith, 1853
* Navicula tumescens Grunow in Schmidt & al., 1877
* Navicula tumescensoides Amossé, 1969
* Navicula tumida Brébisson ex Kützing
* Navicula tumidula Rabenhorst, 1853
* Navicula turbulata Østrup, 1901
* Navicula turgescens Mann, 1925
* Navicula turgida Ehrenberg, 1830
* Navicula turgidula Pantocsek, 1892
* Navicula turkestanensis Hustedt, 1955
* Navicula turpinii Brebisson ex W. Smith Collection
* Navicula turriformis Y.Li & Metzeltin iin Li & al., 2020
* Navicula turris Hustedt, 1936 †
* Navicula tuscula sensu Grunow in Van Heurck, 1880
* Navicula tuscula sensu Pantocsek, 1902
* Navicula tuscula sensu Van Heurck, 1880
* Navicula tuulensis D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
* Navicula tuzsoni Lacsny, 1916
* Navicula tuzsonii Lacsny, 1916
* Navicula twymaniana Archibald, 1966
* Navicula typografica Hustedt in Schmidt & al., 1930
* Navicula tytthocephala Skvortzov, 1976
* Navicula udintsevii Schrader & Fenner, 1976
* Navicula ulna (Nitzsch) Ehrenberg
* Navicula ultratenelloides Lange-Bertalot, 1996
* Navicula umbilica K.E. Lohman, 1957
* Navicula umbilicata Ehrenberg, 1856
* Navicula umbilicata Grunow
* Navicula umbilicata Zimmermann, 1917
* Navicula umbilicatissima Reichardt, 1983 †
* Navicula umbonata Ehrenberg, 1837
* Navicula umbra M.H.Hohn & Hellerman, 1963
* Navicula umida Bock, 1963
* Navicula umkantziensis Schoeman & Meaton
* Navicula umpatica Cholnoky, 1968
* Navicula umtalensis Cholnoky, 1954
* Navicula umtentwenica Cholnoky, 1960
* Navicula uncinata Ehrenberg, 1830
* Navicula undata Mann, 1907
* Navicula undata Schumann in A. Schmidt, 1876
* Navicula undosa Ehrenberg, 1843
* Navicula undosa sensu Donkin, 1871
* Navicula undosa sensu O'Meara, 1876
* Navicula undula Schumann, 1862 †
* Navicula undulata O'Meara, 1875
* Navicula undulata Ralfs, 1861
* Navicula undulata Skvortzov, 1936
* Navicula undulatistriata Manguin, 1954
* Navicula undulatostriata Gleser in Afanas'eva & Gleser, 1986
* Navicula ungavae Poulin & Cardinal, 1982
* Navicula unica Salah & Tamas, 1968
* Navicula unilaterarea Salah, 1953
* Navicula unipunctata Bory, 1831
* Navicula unipunctata O'Meara, 1872
* Navicula unipunctata Skvortzow, 1937
* Navicula uniseriata Hustedt in Schmidt & al., 1934
* Navicula uniseriata Østrup, 1913
* Navicula upupensis Cholnoky, 1966
* Navicula urbana Krasske, 1939
* Navicula ursina Pantocsek, 1902
* Navicula ursinus Foged, 1971
* Navicula usoltsevae Metzeltin, Kulikovskiy & Lange-Bertalot, 2012
* Navicula uspenskiana Gleser & Scheschukova, 1968
* Navicula usutensis Cholnoky, 1962
* Navicula utahensis K.E. Lohman, 1957
* Navicula utermoehlii Hustedt, 1942
* Navicula utlandshoerniensis VanLandingham, 1975
* Navicula vacillans A.Schmidt, 1875
* Navicula vacillans Cleve-Euler, 1948
* Navicula vaga Cleve, 1896
* Navicula vagabunda Brun in Schmidt & al., 1892
* Navicula vahliana Grunow in Schmidt, 1874
* Navicula vahlii Foged, 1964
* Navicula valdestriata Hustedt, 1952
* Navicula valens Cholnoky, 1963
* Navicula valens Hustedt, 1962
* Navicula valeriana D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
* Navicula valida Cleve & Grunow
* Navicula validicostata Cleve-Euler, 1953
* Navicula vallis
* Navicula vallis-natrii
* Navicula vampyra Hohn, 1966
* Navicula vana Schmidt in Schmidt & al., 1881
* Navicula vandamii Schoeman & Archibald, 1987
* Navicula vandermerwei Cholnoky, 1957
* Navicula vaneei Lange-Bertalot, 1998
* Navicula vanei H. Lange-Bertalot in D. Metzeltin & A. Witkowski, 1996
* Navicula vaneldenii Cholnoky, 1957
* Navicula vanheurckii R.M.Patrick, 1966
* Navicula vanhoeffeniformis Gandhi, 1955
* Navicula vanhoeffenii Gran, 1897
* Navicula vanidica Cholnoky, 1962
* Navicula vanmeelii Kufferath, 1956
* Navicula vara Hustedt in Schmidt & al., 1934
* Navicula variabilis Bljumina, 1959
* Navicula varians Gregory, 1855
* Navicula varikuli Foged, 1972
* Navicula variolinea J.R.Carter, 1971
* Navicula varrensis
* Navicula vasta Hustedt, 1937
* Navicula vaszaryi Pantocsek
* Navicula vatinata Carter & Denny, 1982
* Navicula vaucheriae Petersen, 1915
* Navicula vaupellii Foged, 1962
* Navicula vegae Cleve, 1883
* Navicula vekhovii Lange-Bertalot & Genkal, 1999
* Navicula velata Cleve-Euler, 1953
* Navicula velata Schmidt in Schmidt & al., 1876
* Navicula velata sensu Cleve-Euler, 1953
* Navicula velox Ehrenberg, 1830
* Navicula velox Kützing, 1844
* Navicula venerablis Hohn & Hellerman, 1963
* Navicula veneta Schumann, 1867
* Navicula venetiformis B. Van de Vijver & L. Beyens in Van de Vijver, Frenot & Beyens, 2002
* Navicula venetoides S.Blanco, I.Alvarez-Blanco & C.Cejudo-Figueiras, 2012
* Navicula venezuelana Cholnoky, 1968
* Navicula venezuelensis Hustedt, 1956
* Navicula ventosa Hustedt, 1957
* Navicula ventralis Krasske, 1923
* Navicula ventralis sensu Foged, 1958
* Navicula ventraloconfusa Lange-Bertalot, 1989
* Navicula ventraloides Hustedt, 1945
* Navicula ventricosa Ehrenberg, 1830
* Navicula venus Pantocsek, 1892
* Navicula venusta Janisch ex Cleve, 1895
* Navicula venusta Pantocsek, 1889
* Navicula venustissima Kitton in Leuduger-Fortmorel, 1892
* Navicula verecunda Hustedt, 1930
* Navicula verecundaeformis Manguin ex Kociolek & Reviers, 1996
* Navicula verecundoides Manguin ex Kociolek & Reviers, 1996
* Navicula vernalis Donkin, 1869
* Navicula versatilis Marsson, 1900
* Navicula versicolor Grunow, 1874
* Navicula vertebrata O'Meara, 1872
* Navicula vespa O'Meara, 1871
* Navicula vesparella Mann, 1925
* Navicula veterana Hustedt, 1987
* Navicula vetita Krasske, 1941
* Navicula vetula A.Schmidt, 1875
* Navicula vexans Petit, 1904
* Navicula vexativa Manguin, 1952
* Navicula vibrio Ehrenberg, 1854
* Navicula vichiensis C. Petit in Montagne, 1856
* Navicula vicina Hustedt, 1952
* Navicula vickersii O'Meara, 1876
* Navicula vidovichii Grunow in litteris, 1863
* Navicula vilaplanii (Lange-Bertalot & Sabater) Lange-Bertalot & Sabater, 2000
* Navicula viminea Hustedt in Schmidt & al., 1934
* Navicula viminoides Giffen, 1975
* Navicula vincita Carter & Denny, 1982
* Navicula viola Schmidt in Schmidt & al., 1896
* Navicula virgata Hustedt in Schmidt & al., 1934
* Navicula virginalis Hustedt, 1956
* Navicula virginea Cleve, 1878
* Navicula viridis (Nitzsch) Ehrenberg, 1832
* Navicula viridis Ehrenberg, 1838
* Navicula viridis Schmidt in Schmidt & al., 1876
* Navicula viridis sensu Kutzing, 1844
* Navicula viridis sensu Pantocsek, 1892
* Navicula viridula Neupauer, 1867
* Navicula viridulacalcis Lange-Bertalot, 2000
* Navicula viriduloides H.P.Gandhi, 1959
* Navicula virihensis Cleve-Euler, 1953
* Navicula virosa Carter & Denny, 1992
* Navicula visitanda Carter, 1970
* Navicula vitabunda Hustedt, 1930
* Navicula vitila Carter & Denny, 1982
* Navicula vitrea Grunow in Cleve & Möller, 1879
* Navicula vitriscala Brun, 1891
* Navicula vixcylindrata Kulikovskiy Lange-Bertalot & Metzeltin, 2012
* Navicula vixvisibilis Hustedt, 1937
* Navicula vladivostokensis Skvortzow, 1932
* Navicula voigtii F.Meister, 1932
* Navicula voigtioides Amossé, 1969
* Navicula volcanica Bahls & Potapova, 2015
* Navicula voltaensis Foged, 1966
* Navicula vonhauseniae Cholnoky, 1954
* Navicula vonpostii Cleve-Euler, 1953
* Navicula vukotinovicii Pantocsek, 1886
* Navicula vula J.R.Carter, 1971
* Navicula vulpecula Schmidt in Schmidt & al., 1875
* Navicula vulpina Kützing, 1844
* Navicula vulpina Wislouch, 1921
* Navicula vulpina sensu Pantocsek, 1902
* Navicula vumbae Cholnoky, 1954
* Navicula waernensis Foged, 1964
* Navicula walkeri Patrick & Freese, 1961
* Navicula walkerii Sovereign, 1958
* Navicula wallacei Bastow, 1957
* Navicula wallacei Reimer, 1966
* Navicula walterconradii Kufferath, 1957
* Navicula walzii Reinhard, 1870
* Navicula wangii Skvortzov, 2012
* Navicula wardhensis Sarode & Kamat, 1984
* Navicula wardii Patrick, 1959
* Navicula warmingii Foged, 1962
* Navicula wasmundii Witkowski, Metzeltin & Lange-Bertalot in Metzeltin & Witkowski, 1996
* Navicula watveae C. Radhakrishnan, Kociolek & B. Karthick
* Navicula wavella Carter & Denny, 1982
* Navicula wawrikae Hustedt, 1961
* Navicula weberi Bahls, 2012
* Navicula weikerti E.Manguin, 1952
* Navicula weinzierlii H.Schimanski, 1975
* Navicula weissflogii A.W.F.Schmidt, 1873
* Navicula wellingtonica Cholnoky, 1962
* Navicula wendlingii Lange-Bert., G.Hofm. & Van de Vijver in Van de Vijver & Lange-Bertalot, 2009
* Navicula werestschagini Skvortzov & Meyer
* Navicula westermannii Ehrenberg, 1835
* Navicula westii W.Smith, 1853
* Navicula wetzeli Hustedt in Schmidt & al., 1934
* Navicula wheeleri MacKay in Bailey, 1924
* Navicula whitefishensis L.Bahls, 2012
* Navicula wiesneri Lange-Bertalot, 1993
* Navicula wiesnerii Pantocsek, 1886 †
* Navicula wigginsiana Patrick & Freese, 1961
* Navicula wiktoriae A.Witkowski & Lange-Bertalot, 1994
* Navicula wilczeckii Grunow, 1884
* Navicula wildii Lange-Bertalot, 1993
* Navicula willeri Krasske, 1939
* Navicula williamsonii O'Meara, 1875
* Navicula willisiae Seddon & Witkowski, 2011
* Navicula wilmanni Fritsch & Rich, 1929
* Navicula winchelliana H.L. Smith in B.W. Thomas, 1893
* Navicula winona Bahls, 2012
* Navicula wisei Harwood & Maruyama, 1992
* Navicula wislouchii Kutzing
* Navicula wislouchii Skvortzov & Meyer
* Navicula witkowskii Lange-Bertalot, Iserentant & Metzeltin, 1998
* Navicula witti Heiden in Schmidt & al., 1903
* Navicula wittiana Grunow in A. Schmidt, 1874
* Navicula wittii Grunow in Cleve, 1881
* Navicula wohlenbergi Brockmann, 1950
* Navicula wolterecki
* Navicula woronichinii Jasnitsky, 1936
* Navicula woroninii Mereschkowsky, 1903
* Navicula wrightiana Woodhead & Tweed, 1960
* Navicula wrightii O'Meara, 1867
* Navicula wuestii R.Simonsen, 1959
* Navicula wulffii Petersen, 1924
* Navicula wunsamiae A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000
* Navicula wustula Carter & Denny, 1982
* Navicula wygaschii Lange-Bertalot, 2001
* Navicula xi Cleve
* Navicula xi sensu Hustedt in Schmidt & al., 1930
* Navicula yabe Skvortzow, 1937
* Navicula yarrasii Grunow in H.L. Smith, 1874-1879
* Navicula yatukaensis Y.Horikawa & H.Okuno, 1943
* Navicula yorkensis Camburn, 1978
* Navicula ypsilon Cleve, 1894
* Navicula yunnanensis Li & Metzeltin, 2015
* Navicula yuraensis Negoro & Gotoh, 1983
* Navicula zachariasi Reichelt, 1903
* Navicula zagrebensis VanLandingham, 1975
* Navicula zahlbruckneri Pantocsek, 1909
* Navicula zanardiniana Grunow, 1860
* Navicula zanonii
* Navicula zastronensis Schoeman, 1973
* Navicula zebra Ehrenberg, 1833
* Navicula zechenteri Pantocsek, 1886
* Navicula zeilleri Lauby
* Navicula zelebori Ehrenberg, 1862
* Navicula zeta Cleve, 1895
* Navicula zhengii Witkowski & Ch.Li in Witkowski & al., 2016
* Navicula zichyi
* Navicula zimmermannii D.F.Gomes & D.M.Williams, 2012
* Navicula zipila Carter & Denny, 1982
* Navicula zizix Van Landingham, 1975
* Navicula zohdyi Salah, 1953
* Navicula zonata Hustedt, 1956
* Navicula zonula Cholnoky, 1960
* Navicula zostereti Grunow
* Navicula zostereti sensu Schmidt, 1874
* Navicula zsivnyana Krenner, 1926
* Navicula zulu Cholnoky, 1957
* variété Navicula var. fasciata