The Philopappos Monument (Greek: Μνημείο Φιλοπάππου, Mnimío Philopáppou, [mniˈmio filoˈpapu]) is an ancient Roman mausoleum and monument dedicated to Gaius Julius Antiochus Epiphanes Philopappos or Philopappus (Greek: Γάιος Ιούλιος Αντίοχος Επιφανής Φιλόπαππος, 65–116 AD), a prince from the Kingdom of Commagene.
Philopappos died in 116 AD, and his death caused great grief to his sister Julia Balbilla, citizens of Athens and possibly to the imperial family.
[1] The monument was built on the same site where Mousaios or Musaeus, a 6th-century BC priestly poet and mystical seer, was held to have been buried.
The location of this tomb, opposite the Acropolis and within formal boundaries of the city, shows the high position Philopappos had within Athenian society.
The upper level shows statues of three men: of Antiochus IV on the left, of Philopappos in the centre and of Seleucus I Nicator, now lost, on the right.
The traveller Cyriacus of Ancona wrote in his memoir that underneath the inscription stated "King Seleucus Nicator, son of Antiochus".