Artikel ini mendaftar genera Arkea (Archaea).

Genus dari Archaea berikut ini belum dimasukkan ke dalam sebuah filum:

* Genus *Halostagnicola*

This section lists the genera of Archaea within the filum Crenarchaeota.

Class Thermoprotei
------------------

This section lists the genera of Archaea within the Class Thermoprotei.

### Order Caldisphaerales

This section lists the genera of Archaea within the Order Caldisphaerales.

#### Family Caldisphaeraceae

This section lists the genera of Archaea within the Famili Caldisphaeraceae.

* Genus *Caldisphaera*

#### Order Cenarchaeales

This section lists the genera of Archaea within the Order Cenarchaeales.

##### Family Cenarchaeaceae

This section lists the genera of Archaea within the Family Cenarchaeaceae.

* Genus *Cenarchaeum*

#### Order Desulfurococcales

This section lists the genera of Archaea within the Order Desulfurococcales.

The following two genera of Desulfurococcales have not been assigned to a family:

* Genus *Caldococcus*
* Genus *Ignisphaera*

##### Family Desulfurococcaceae

This section lists the genera of Archaea within the Family Desulfurococcaceae.

* Genus *Acidilobus*
* Genus *Acidococcus*
* Genus *Aeropyrum*
* Genus *Desulfurococcus*
* Genus *Ignicoccus*
* Genus *Staphylothermus*
* Genus *Stetteria*
* Genus *Sulfophobococcus*
* Genus *Thermodiscus*
* Genus *Thermosphaera*

##### Family Pyrodictiaceae

This section lists the genera of Archaea within the Family Pyrodictiaceae.

* Genus *Geogemma*
* Genus *Hyperthermus*
* Genus *Pyrodictium*
* Genus *Pyrolobus*

#### Order Nitrosopumilales

This section lists the genera of Archaea within the Order Nitrosopumilales.

##### Family Nitrosopumilaceae

This section lists the genera of Archaea within the Family Nitrosopumilaceae.

* Genus *Nitrosopumilus* (candidatus)

#### Order Sulfolobales

This section lists the genera of Archaea within the Order Sulfolobales.

##### Family Sulfolobaceae

This section lists the genera of Archaea within the Family Sulfolobaceae.

* Genus *Acidianus*
* Genus *Metallosphaera*
* Genus *Stygiolobus*
* Genus *Sulfolobus*
* Genus *Sulfurisphaera*

#### Order Thermoproteales

This section lists the genera of Archaea within the Order Thermoproteales.

##### Family Thermofilaceae

This section lists the genera of Archaea within the Family Thermofilaceae.

* Genus *Thermofilum*

##### Family Thermoproteaceae

This section lists the genera of Archaea within the Family Thermoproteaceae.

* Genus *Caldivirga*
* Genus *Pyrobaculum*
* Genus *Thermocladium*
* Genus *Thermoproteus*
* Genus *Vulcanisaeta*

Phylum Euryarchaeota
--------------------

This section lists the genera of Archaea within the Phylum Euryarchaeota.

The following genus of the Euryarchaeota has not been assigned to a class:

* Genus *Aciduliprofundum*

### Class Archaeoglobi

This section lists the genera of Archaea within the Class Archaeoglobi.

#### Order Archaeoglobales

This section lists the genera of Archaea within the Order Archaeoglobales.

##### Family Archaeoglobaceae

This section lists the genera of Archaea within the Family Archaeoglobaceae.

* Genus *Archaeoglobus*
* Genus *Ferroglobus*
* Genus *Geoglobus*

### Class Halobacteria

This section lists the genera of Archaea within the Class Halobacteria.

#### Order Halobacteriales

This section lists the genera of Archaea within the Order Halobacteriales.

##### Family Halobacteriaceae

This section lists the genera of Archaea within the Family Halobacteriaceae.

* Genus *Haladaptatus*
* Genus *Halalkalicoccus*
* Genus *Haloalcalophilium*
* Genus *Haloarcula*
* Genus *Halobacterium*
* Genus *Halobaculum*
* Genus *Halobiforma*
* Genus *Halococcus*
* Genus *Haloferax*
* Genus *Halogeometricum*
* Genus *Halomicrobium*
* Genus *Halopiger*
* Genus *Haloplanus*
* Genus *Haloquadra*
* Genus *Halorhabdus*
* Genus *Halorubrum*
* Genus *Halosarcina*
* Genus *Halosimplex*
* Genus *Haloterrigena*
* Genus *Halovivax*
* Genus *Natrialba*
* Genus *Natrinema*
* Genus *Natronobacterium*
* Genus *Natronococcus*
* Genus *Natronolimnobius*
* Genus *Natronomonas*
* Genus *Natronorubrum*

### Class Methanobacteria

This section lists the genera of Archaea within the Class Methanobacteria.

#### Order Methanobacteriales

This section lists the genera of Archaea within the Order Methanobacteriales.

The following two genera of the Methanomicrobiales have not been assigned to a family:

* Genus *Methanoregula* (*candidatus*)
* Genus *Methanocalculus*

##### Family Methanobacteriaceae

This section lists the genera of Archaea within the Family Methanobacteriaceae.

* Genus *Methanobacterium*
* Genus *Methanobrevibacter*
* Genus *Methanosphaera*
* Genus *Methanothermobacter*

##### Family Methanothermaceae

This section lists the genera of Archaea within the Family Methanothermaceae.

* Genus *Methanothermus*

### Class Methanococci

This section lists the genera of Archaea within the Class Methanococci.

#### Order Methanococcales

This section lists the genera of Archaea within the Order Methanococcales.

##### Family Methanocaldococcaceae

This section lists the genera of Archaea within the Family Methanocaldococcaceae.

* Genus *Methanocaldococcus*
* Genus *Methanotorris*

##### Family Methanococcaceae

This section lists the genera of Archaea within the Family Methanococcaceae.

* Genus *Methanococcus*
* Genus *Methanothermococcus*

### Class Methanomicrobia

This section lists the genera of Archaea within the Class Methanomicrobia.

#### Order Methanomicrobiales

This section lists the genera of Archaea within the Order Methanomicrobiales.

##### Family Methanocorpusculaceae

This section lists the genera of Archaea within the Family Methanocorpusculaceae.

* Genus *Methanocorpusculum*

##### Family Methanomicrobiaceae

This section lists the genera of Archaea within the Family Methanomicrobiaceae.

* Genus *Methanoculleus*
* Genus *Methanofollis*
* Genus *Methanogenium*
* Genus *Methanolacinia*
* Genus *Methanomicrobium*
* Genus *Methanoplanus*

##### Family Methanospirillaceae

This section lists the genera of Archaea within the Family Methanospirillaceae.

* Genus *Methanospirillum*

#### Order Methanosarcinales

This section lists the genera of Archaea within the Order Methanosarcinales.

##### Family Methanosaetaceae

This section lists the genera of Archaea within the Family Methanosaetaceae.

* Genus *Methanosaeta*

##### Family Methanosarcinaceae

This section lists the genera of Archaea within the Family Methanosarcinaceae.

* Genus *Methanimicrococcus*
* Genus *Methanococcoides*
* Genus *Methanohalobium*
* Genus *Methanohalophilus*
* Genus *Methanolobus*
* Genus *Methanomethylovorans*
* Genus *Methanosalsum*
* Genus *Methanosarcina*

### Class Methanopyri

This section lists the genera of Archaea within the Class Methanopyri.

#### Order Methanopyrales

This section lists the genera of Archaea within the Order Methanopyrales.

##### Family Methanopyraceae

This section lists the genera of Archaea within the Family Methanopyraceae.

* Genus *Methanopyrus*

### Class Thermococci

This section lists the genera of Archaea within the Class Thermococci.

#### Order Thermococcales

This section lists the genera of Archaea within the Order Thermococcales.

##### Family Thermococcaceae

This section lists the genera of Archaea within the Family Thermococcaceae.

* Genus *Palaeococcus*
* Genus *Pyrococcus*
* Genus *Thermococcus*

### Class Thermoplasmata

This section lists the genera of Archaea within the Class Thermoplasmata.

#### Order Thermoplasmatales

This section lists the genera of Archaea within the Order Thermoplasmatales.

##### Family Ferroplasmaceae

This section lists the genera of Archaea within the Family Ferroplasmaceae.

* Genus *Ferroplasma*

##### Family Picrophilaceae

This section lists the genera of Archaea within the Family Picrophilaceae.

* Genus *Picrophilus*

##### Family Thermoplasmataceae

This section lists the genera of Archaea within the Family Thermoplasmataceae.

* Genus *Thermoplasma*

Phylum Korarchaeota
-------------------

This section lists the genera of Archaea within the Phylum Korarchaeota.

Only environmental samples of the Korarchaeota have been studied.

Phylum Nanoarchaeota
--------------------

This section lists the genera of Archaea within the Phylum Nanoarchaeota.

The following genus of the Nanoarchaeota has not been assigned to a class:

* Genus *Nanoarchaeum*