Elaeus is an ancient city of Thrace, now in Turkey.

Elaeus or Elaious () may also refer to:

Elaeus (Aetolia), a town of ancient Aetolia, Greece Elaeus (Argolis), a town of ancient Argolis, Greece Elaeus (Attica), a deme of ancient Attica, Greece Elaeus (Bithynia), a town of ancient Bithynia, in Asia Minor Elaeus (Caria), a town of ancient Caria, in Asia Minor Elaeus (Epirus), a town of ancient Epirus, Greece Elaeus (Naxos), a town of ancient Naxos, Greece