| Mode: | Basketball |
| Year: | 1954–55 |
| Team: | Washington State Cougars |
| Conference: | Pacific Coast Conference |
| Short Conf: | PCC |
| Record: | 11–15 |
| Conf Record: | 5–11 |
| Hc Year: | 27th |
The 1954–55 Washington State Cougars men's basketball team represented Washington State College for the 1954–55 NCAA college basketball season. Led by 27th-year head coach Jack Friel, the Cougars were members of the Pacific Coast Conference and played their home games on campus at Bohler Gymnasium in Pullman, Washington.
The Cougars were overall in the regular season and in conference play, tied for last in the Northern division