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