Plaka (Greek: Πλάκα) is a village in the municipality of Megalopoli, Arcadia, Greece.

It is 1 km south of Soulos, 3 km northeast of Thoknia, 3 km southwest of Nea Ekklisoula and 4 km northwest of Megalopoli.

The Greek National Road 76 (Megalopoli - Andritsaina - Krestena) passes east of the village.

The Megalopoli Power Plant is located to the south and a large open-pit lignite mine is to the west.