Siamun (âÂÂSon of AmunâÂÂ) was a prince of the Eighteenth Dynasty of Egypt, a son of Pharaoh Thutmose III.
He is named on a statue of Chancellor Sennefer (now in the Egyptian Museum in Cairo), which can be dated to the reign of Thutmose III. He was the half-brother of Pharaoh Amenhotep II