The Acarnanian League was the tribal confederation, and later a fully-fledged federation, of the Acarnanians in Classical, Hellenistic, and early Roman-era Greece.

Acarnania is a region of west-central Greece that lies along the Ionian Sea, west of Aetolia, with the Achelous River for a boundary, and north of the gulf of Calydon, which is the entrance to the Gul