Amfissa is a town in Phocis, Greece, part of the municipality of Delphi, of which it is the seat and a municipal unit. The municipal unit has an area of 315.174 km2. It lies on the northern edge of the olive forest of the Crissaean plain, between two mountains, Giona to the west and Parnassus to the east, 200 km (120 mi) northwest of Athens and 20 km (12 mi) of Delphi, as well as 85 km (53 mi) northeast of Naupactus and 72 km (45 mi) south of Lamia.