The 1990–91 UCLA Bruins men's basketball team represented the University of California, Los Angeles in the 1990–91 NCAA Division I men's basketball season. Jim Harrick for the third year, was the head coach for the Bruins. The Bruins started the season ranked 11th in the AP Poll and won their first 8 games. They finished in 2nd place in the Pac-10 with the same conference record as the previous year, 11-7. UCLA went on to the NCAA Tournament where they upset by Penn St. 69-74. UCLA finished ranked 14th and 16th in the UPI and AP Polls respectively.