Prys Morgan FRHistS FSA FLSW (born 1937) is a Welsh historian.
He was born in Cardiff, the son of academic T. J. Morgan. Like his brother, Rhodri Morgan, Prys Morgan was educated at Whitchurch Grammar School and St John's College, Oxford. He then joined the teaching staff of the University of Wales, Swansea, where his father had been a professor. Following his retirement from academic life, he became President of the National Eisteddfod of Wales at Swansea, President of the Honourable Society of Cymmrodorion, and is joint director of the Iolo Morganwg project at the Centre for Welsh and Celtic Studies in Aberystwyth. He is also a Founding Fellow of the Learned Society of Wales and is a Member of its inaugural Council.