The 2002–03 Washington State Cougars men's basketball team represented Washington State University for the 2002–03 NCAA Division I men's basketball season.
Led by third-year head coach Paul Graham, 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 7–20 overall in the regular season and 2–16 in conference play, last in the standings.
[3][4][5] The conference tournament included only the top eight teams from the standings.
Days after the season ended, Graham was fired;[6][7][8][9] his successor was Dick Bennett, formerly the head coach at Wisconsin.