Ptolemy Eupator

Ptolemy Eupator (, Ptolemaios Eupatōr, "Ptolemy the Well-fathered [God]") was the son of Ptolemy VI Philometor and Cleopatra II, and for a short time in 152 BC reigned as co-ruler on Cyprus with his father. It is thought that Ptolemy Eupator died in August of that same year.

Ptolemy Eupator is attested on small number of documents and inscriptions: he is mentioned in a demotic papyrus held by the British Museum, is referenced as a priest of the cult of Alexander during 158–157 BC, and that he was a co-regent with his father in 152 BC. His name was added to the list of deified Ptolemies, ahead of that of his father, whom he predeceased.