Aegae or Aigai (Ancient Greek: Αἰγαὶ), or Aegaeae or Aigaiai (Αἰγαῖαι), or Aegeae or Aigeai (Αἴγεαι), was a town on the coast of ancient Cilicia, on the north side of the Bay of Issus. It is now separated from the outlet of the Pyramus (the modern Ceyhan) by a long narrow estuary called Gulf of Alexandretta. In Strabo's time it was a small city with a port. Aegae was a Greek town, but the origin of it is unknown. A Greek inscription of the Roman period has been discovered there; and under the Roman dominion it was a place of some importance. Tacitus calls it Aegeae. It was Christianised at an early date, and while no longer retaining a residential bishop, remains a titular see of the Roman Catholic Church, under the name of Aegeae.