1990–91 Oklahoma State Cowboys basketball team

1990–91 Oklahoma State Cowboys basketball
Big Eight Regular season co-champions
ConferenceBig Eight Conference
Ranking
CoachesNo. 13
APNo. 14
Record24–8 (10–4 Big Eight)
Head coach
Assistant coaches
Home arenaGallagher-Iba Arena
(Capacity: 6,381)
1990–91 Big Eight Conference men's basketball standings
Conf. Overall
Team W   L   PCT W   L   PCT
No. 14 Oklahoma State 10 4   .714 24 8   .750
No. 12 Kansas 10 4   .714 27 8   .771
No. 11 Nebraska 9 5   .643 26 8   .765
Missouri 8 6   .571 20 10   .667
Iowa State 6 8   .429 12 19   .387
Oklahoma 5 9   .357 20 15   .571
Colorado 5 9   .357 19 14   .576
Kansas State 3 11   .214 13 15   .464
1991 Big Eight tournament winner
As of April 1, 1991
Rankings from AP poll

The 1990–91 Oklahoma State Cowboys basketball team represented Oklahoma State University as a member of the Big Eight Conference during the 1990–91 NCAA Division I men's basketball season. The team was led by head coach Eddie Sutton and played their home games at Gallagher-Iba Arena. The Cowboys finished with a record of 24–8 (10–4 Big Eight) and won the Big Eight regular season title.

Oklahoma State received an at-large bid to the NCAA tournament as No. 3 seed in the East region. After defeating New Mexico in the opening round, the school's first NCAA Tournament win in 26 years, the Cowboys defeated NC State to reach the Sweet Sixteen. The run ended in the East regional semifinal, as Temple defeated OSU to reach the Elite Eight.