Aigai (Ancient Greek: Αἰγαί) or Latin(ized) Aegae/ Ægæ may refer to the following places and jurisdictions :
- Aigai (Aeolis), ancient city and former bishopric of the Aeolian dodecapolis in Asia Prima, now Nemrutkale or Nemrut Kalesi near the modern city Aliağa in northwestern Turkey and a Latin Catholic titular
- Aegae (Cilicia), ancient town of Cilicia, near modern Yumurtalık, Turkey
- Aegae (Macedonia), first capital of the Classical kingdom of Macedonia, now Vergina
- Aegae (Achaea), ancient settlement near present Aigeira, in Achaea
- Aegae (Euboea), ancient town in Euboea, near which a sanctuary of Aegean Poseidon was built upon a hill
- Aege, ancient town in Pallene, Chalcidice