The 1990–91 Murray State Racers men's basketball team represented Murray State University during the 1990–91 NCAA Division I men's basketball season. The Racers, led by head coach Steve Newton, played their home games at Racer Arena in Murray, Kentucky as members of the Ohio Valley Conference. They finished the season 24–9, 10–2 in OVC play to win the OVC regular season championship. They defeated Middle Tennessee to win the OVC tournament to advance to the NCAA tournament. As No. 14 seed in the Southeast region, the Racers battled No. 3 seed Alabama before losing 89–79.