Aethaea or Aithaia (Ancient Greek: Αἴθαια) was a town of ancient Messenia, the inhabitants of which revolted from Sparta with the Thuriatae in 464 BCE.
Its site is unlocated.
This article incorporates text from a publication now in the public domain: Smith, William, ed. (1854–1857). "Aethaea". Dictionary of Greek and Roman Geography. London: John Murray.