Chasia (Greek: Χάσια) is a former municipality in Grevena regional unit, West Macedonia, Greece.

Since the 2011 local government reform it is part of the municipality Deskati, of which it is a municipal unit.

The seat of the municipality was in Karpero.

The municipal unit has an area of 162.692 km2.

[3] This Western Macedonia location article is a stub.