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 in the Empire.