(Ἀντίγονος), son of ECHECRATES, the brother of Antigonus Doson, revealed to Philip V., king of Macedonia, a few months before his death, B. C. 179, the false accusations of his son Perseus against his other son Demetrius, in consequence of which Philip had put the latter to death. Indignant at the conduct of Perseus, Philip appointed Antigonus his successor; but on his death Perseus obtained possession of the throne, and caused Antigonus to be killed. (Liv. 40.54_58.)