(Ἀντίνους), a chief among the Molossians in Epeirus, who became involved, against his own will, in the war of Perseus, king of Macedonia, against the Romans. His family and that of another chief, Cephalus, were connected with the royal house of Macedonia by friendship, and although he was convinced that the war against Rome would be ruinous to Macedonia and therefore had no intention of joining Perseus, yet Charops, a young Epeirot, who had been educated at Rome and wished to insinuate himself into the favour of the Romans, calumniated Antinous and Cephalus as if they entertained a secret hostility towards Rome. Antinous and his friends at first treated the machinations of Charops with contempt, but when they perceived that some of their friends were arrested and conveyed to Rome, Antinous and Cephalus were compelled, for the sake of their own safety, openly, though unwillingly, to join the Macedonian party, and the Molossians followed their example. After the outbreak of the war Antinous fell fighting, B. C. 168. Polybius does not state clearly whether Antinous fell in battle, or whether he put an end to his own life in despair. (Plb. 27.13, 30.7.)