Aigeira is a town and a former municipality in northeastern Achaea, West Greece, Greece. Since the 2011 local government reform it is part of the municipality Aigialeia, of which it is a municipal unit. The municipal unit stretches from the Gulf of Corinth, where the town Aigeira is located, to the mountains in the south. The town Aigeira is southeast of Aigio, northwest of Corinth and east of Patras. The Greek National Road 8A ( E65 Corinth - Patras) and the railway Corinth - Patras run through the town.