AGRI´NIUM(Ἀγρίνιον), a town of Aetolia, situated towards the NE. of Aetolia, near the Achelous. Its position is quite uncertain. From its name we might conjecture that it was a town of the Agraci; but the narrative in Polybius (Plb. 5.7) would imply that it was not so far north. In B.C. 314 we find Agrinium in alliance with the Acarnanians, when Cassander marched to the assistance of the latter against the Aetolians. As soon as Cassander returned to Macedonia, Agrinium was besieged by the Aetolians,and capitulated; but the Aetolians treacherously put to death the greater part of the inhabitants. (Diod. 19.67, 68; Leake, Northern Greece, vol. 1. p. 156.)