1989–90 Washington State Cougars men's basketball team

1989–90 Washington State Cougars men's basketball
ConferencePacific-10
Record7–22 (1–17 Pac-10)
Head coach
Home arenaBeasley Coliseum
1989–90 Pacific-10 Conference men's basketball standings
Conf. Overall
Team W   L   PCT W   L   PCT
No. 22 Oregon State 15 3   .833 22 7   .759
No. 14 Arizona 15 3   .833 25 7   .781
California 12 6   .667 22 10   .688
UCLA 11 7   .611 22 11   .667
Oregon 10 8   .556 15 14   .517
Stanford 9 9   .500 18 12   .600
USC 6 12   .333 12 16   .429
Arizona State 6 12   .333 15 16   .484
Washington 5 13   .278 11 17   .393
Washington State 1 17   .056 7 22   .241
Conference tournament winner
As of April 15, 1990
Rankings from AP Poll

The 1989–90 Washington State Cougars men's basketball team represented Washington State University for the 1989–90 NCAA Division I men's basketball season. Led by third-year head coach Kelvin Sampson, the Cougars were members of the Pacific-10 Conference and played their home games on campus at Beasley Coliseum in Pullman, Washington.

The Cougars were 7–21 overall in the regular season and 1–17 in conference play, last in the standings. The sole Pac-10 victory was by one point over USC on November 30, and the season's last win was on December 29.

At the conference tournament, the Cougars met seventh seed USC in the first round and lost by seventeen points, ending the season on an eighteen-game losing streak.