Oinoi is a village and a former community in the northern part of West Attica, Greece. Since the 2011 local government reform it is part of the municipality Mandra-Eidyllia, of which it is a municipal unit.
The ancient site Oenoe is located about 3 km east of the modern settlement of Oinoi. The Greek National Road 3 (Eleusis - Thebes) passes through Oinoi. Oinoi is surrounded by forested mountains, including Pateras and Pastra . There are farmlands in the valley areas. Oinoi is located 7 km east of Vilia, 18 km northwest of Eleusis, 19 km southeast of Thebes and northwest of Athens city centre.