1965–66 Washington State Cougars men's basketball team

1965–66 Washington State Cougars men's basketball
ConferenceAthletic Association of Western Universities
Record15–11 (6–8 AAWU, Pac-8)
Head coach
Home arenaBohler Gymnasium
1965–66 AAWU Conference men's basketball standings
Conf.Overall
TeamW L PCTW L PCT
Oregon State122 .857217  .750
UCLA104 .714188  .692
Stanford86 .5711312  .520
Washington State68 .4291511  .577
Oregon68 .4291313  .500
USC68 .4291313  .500
Washington410 .2861015  .400
California410 .286916  .360
Rankings from AP Poll

The 1965–66 Washington State Cougars men's basketball team represented Washington State University for the 1965–66 NCAA college basketball season. Led by eighth-year head coach Marv Harshman, the Cougars were members of the Athletic Association of Western Universities (AAWU, Pac-8) and played their home games on campus at Bohler Gymnasium in Pullman, Washington.

The Cougars were 15–11 overall in the regular season and 6–8 in conference play, tied for fourth in the standings.

The fifteen wins were the most for Washington State in fourteen years.