Marcel Hamelin (born September 18, 1937) is a Canadian historian and academic. He served as President of the University of Ottawa from 1990 to 2001. He is a member of the Royal Society of Canada. He is an alumnus of the University of Laval (Doctor of Letters in History, 1961) and the Séminaire Sainte-Marie in Shawinigan, Quebec. He joined the Faculty of Arts at the University of Ottawa in 1966, teaching and serving as chairman in the Department of History.