Oa (Attica)

Oa, also Oae or Oai, (Ὄα or Ὀά ) was a deme of ancient Attica, originally of the phyle of Pandionis, but after 127/8 AD, of the phyle of Hadrianis, sending four delegates to the Athenian Boule.

Its site is located near modern Papangelaki.