Gaius Julius Antiochus Epiphanes Philopappos or Philopappus (Greek: Γάϊος Ἰούλιος Ἀντίοχος Ἐπιφανής Φιλόπαππος; 65–116), was a Prince of the Kingdom of Commagene who lived in the Roman Empire during the 1st century and 2nd century. He was one of the most prominent Greeks who lived in the Roman Empire.