|Regional unit||West Attica|
|o Municipal unit||14.431 km2 (5.572 sq mi)|
|Elevation||301 m (988 ft)|
|o Municipal unit||382|
|o Municipal unit density||26/km2 (69/sq mi)|
|Time zone||UTC+2 (EET)|
|o Summer (DST)||UTC+3 (EEST)|
Oinoi (Greek: ) is a village and a former community in the northern part of West Attica, Greece. The village was named Mazi (Greek: ?) until 1919. Since the 2011 local government reform it is part of the municipality Mandra-Eidyllia, of which it is a municipal unit. The municipal unit has an area of 14.431 km2.
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 (1,131 m (3,711 ft)) and Pastra (1,016 m (3,333 ft)). 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 34 km (21 mi) northwest of Athens city centre.