Harry Emmet Gunning, OC (December 16, 1916 – November 24, 2002) was a Canadian scientist and administrator. Born in Toronto, Ontario, he received a Bachelor of Arts degree, a Master of Arts degree, and a Ph.D. in physical chemistry in 1942 from the University of Toronto. In 1957, he was appointed Professor and Chairman of the Department of Chemistry at the University of Alberta. From 1974 to 1979, he was the President as well. In 1979, he was made an Officer of the Order of Canada as a "scientist and educator, who has achieved an international reputation for chemical research".