The 1990–91 Utah Utes men's basketball team represented the University of Utah as a member of the Western Athletic Conference during the 1990–91 men's basketball season. Led by head coach Rick Majerus, the Utes made a run to the Sweet Sixteen of the NCAA tournament before falling to unbeaten UNLV in the West regional semifinals. The Utes finished with an overall record of 30–4 (15–1 WAC).