|Regional unit||West Attica|
|o Mayor||Papous Christos (PASOK)|
|o Municipality||109.13 km2 (42.14 sq mi)|
|o Municipal unit||69.28 km2 (26.75 sq mi)|
|Elevation||330 m (1,080 ft)|
|o Municipality density||420/km2 (1,100/sq mi)|
|o Municipal unit||2,946|
|o Municipal unit density||43/km2 (110/sq mi)|
|Time zone||UTC+2 (EET)|
|Vehicle registration||Z (as of 2006)|
Fyli (Greek: ?, pronounced [fi'li], meaning "tribe") is a town and a municipality in the northwestern part of Attica, Greece. It lies in the northeastern corner of the West Attica regional unit, and is a suburb of Piraeus. The seat of the municipality is the town Ano Liosia. Within bounds of the town is the ancient Attic fortress of Phyle.
The municipality Fyli was formed at the 2011 local government reform by the merger of the following 3 former municipalities, that became municipal units:
The municipality has an area of 109.128 km2, the municipal unit 69.281 km2.
Fyli is situated in the southern foothills of the mountains of Parnitha, and northeast of the plain of Eleusis. It is 4 km northeast of Ano Liosia, 8 km northeast of Aspropyrgos and 14 km northwest of Piraeus city centre. Motorway 6 passes south of the town.
Fyli suffered some damage from the 2007 Greek forest fires.