Omeljan Pritsak (Ukrainian: ?????´? ?????´?; 7 April 1919, Luka, Sambir County, West Ukrainian People's Republic – 29 May 2006, Boston, Massachusetts, U.S.) was the first Mykhailo Hrushevsky Professor of Ukrainian History at Harvard University and the founder and first director (1973–1989) of the Harvard Ukrainian Research Institute.