Alpha

;Astronomical nomenclature
* Alpha Ataru, a location
* Alpha Bayard, a location
* Alpha Beaird, a location
* Alpha Cooper, a location
* Alpha Coronae Borealis, a star system
* Alpha Crum, a location
* Alpha Glover, a location
* Alpha Johnson, a location
* Alpha McCusker, a location
* Alpha Meyers, a location
* Alpha Saunders, a location
* Alpha Shiro, a location
* Alpha Suhr, a location
;Cardassian terminology
* Alpha Red priority mission, a Cardassian military directive
;Cartography
* Alpha Quadrant, a quarter of the Milky Way Galaxy
* Kavis Alpha sector, a region of space
;Chemistry
* Hydrogen-alpha emission, an emission line created by hydrogen atoms
;Colonies
* Colony Alpha 5, an Earth colony
;Food and beverages
* Alpha-currant nectar, a Wadi beverage
;Holographic terminology
* Jupiter Station Diagnostic Program Alpha-11, a holographic agent
* Diagnostic routine alpha-three-six, a diagnostic performed on The Doctor's mobile emitter
* Emergency procedure alpha two, a main computer bypassing procedure
* Various holodeck programs, including:
** Diplomacy scenario 12-alpha
** Insurrection Alpha
** K'mtar Alpha-One
** Paris Program Alpha-1
** Seven of Nine Alpha-3
;Legal terminology
* Statutes of Alpha III
* Treaty of Alpha Cygnus IX
* Tribunal of Alpha III
;Medical terminology
* Alpha wave, a brain wave pattern
** Alpha-wave inducer
* Theta 12 alpha, a drug devised by The Doctor to combat Vulcan pon farr
;Planets
* Alfa 177
* Alpha III
* Alpha VII
* Alpha Balder IV
* Alpha Braga VII
* Alpha Carinae II
* Alpha Carinae V
* Alpha Cygnus IX
* Alpha Delphi IX
* Alpha Drapanas
* Alpha Echevarria IV
* Alpha Eridani II
* Alpha Fernandes III
* Alpha Laputa IV
* Alpha Majoris I
* Alpha Omicron VII
* Alpha Onias III
* Alpha Roller II
* Alpha Rossi
* Alpha Zayra II
* Ceti Alpha V
* Ceti Alpha VI
* Doctari Alpha
* Kavis Alpha IV
* Planet 1865-Alpha
* Tau Alpha C
* Zeta Alpha II
;Planetoids
* Alpha 441
* Alpha moon, aka Peliar Zel Alpha, a natural satellite of Peliar Zel
* Memory Alpha
;School
* University of Alpha Centauri
;Ships
* Alpha Nine, an attack raider used by the Maquis
* Alpha Seven, an attack raider used by the Maquis
* NX-Alpha, test vessel of the NX Program
;Space station
* Lya Station Alpha, a Starfleet space station
;Star systems
* Alpha Centauri
* Alpha Circini
* Alpha Doradus system
* Alpha Gruis
* Alpha Indi
* Alpha Leonis system
* Alpha Omicron system
* Alpha Onias system
* Alpha Ophiuchi
* Alpha Serpentis
* Ceti Alpha star system
* Dikon Alpha system
* M24 Alpha system
* Nequencia Alpha system
;Starfleet terminology
* Alpha-47 authorization, a Starfleet security protocol
* Alpha search pattern, a Starfleet procedure
* Alpha shift, the first shift or watch on a Starfleet starship
* Code 1-Alpha-Zero, a ship in distress code
* Pattern Riker Alpha, a Starfleet standard maneuver, developed by William T. Riker
* Seven-Alpha, a evasive maneuver executed by Captain Georgiou
;Stars
* Alpha Caeli
* Alpha Carinae
* Alpha Centauri C (Alpha Proxima)
* Alpha Leonis
* Alpha Majoris
* Alpha Monocerotis
* Alpha Tauri
* Ceti Alpha
* Dikon Alpha, a class nine pulsar
;Titles
* , a Jem'Hadar soldier bred in the Alpha Quadrant
* Alpha Hirogen, leader of a Hirogen pack
;Miscellaneous
* Alpha k, a bandwidth
* Doctor Alpha, a music program
* 56 alpha, an audio file
fr:Alpha