Archa is a transliteration of the Tatar name of Arsk, a town in the Republic of Tatarstan, Russia.
Archa may also refer to:
Archa, a beer brewed by ThaiBev Archa (document store), a mediaeval document repository
See also Archaea (disambiguation), or Archea Archery (disambiguation) Archa Darugha, a division of Kazan Khanate and later of Kazansky Uyezd Ala-Archa, a river in Kyrgyzstan On-Archa, a river in Kyrgyzstan