Archaea is a domain of single-celled organisms.
Archaea or archea may also refer to:
- Archaea (spider), an extinct genus of Archaeidae
- Archaea (journal), published by Hindawi
See also
edit- Archaic (disambiguation), an earlier or ancient period or practice
- Archean, or Archæan, an early geological eon
- "archaeo-" ('ancient'), a commonly used taxonomic affixes
- Arcaea, a rhythm game developed and published by lowiro