Ptolemy V Epiphanes (, Ptolemaĩos Epiphanḗs, reigned 204–181 BC), son of Ptolemy IV Philopator and Arsinoe III of Egypt, was the fifth ruler of the Ptolemaic dynasty. He inherited the throne at the age of five, and under a series of regents, the kingdom was paralyzed. The Rosetta Stone was produced during his reign as an adult.