| Mode: | Basketball |
| Year: | 1918–19 |
| Prev Year: | 1917–18 |
| Next Year: | 1919–20 |
| Team: | Washington State Cougars |
| Conference: | Pacific Coast Conference |
| Short Conf: | PCC |
| Record: | 10–11 |
| Conf Record: | 7–5 |
| Hc Year: | 11th |
| Bowl Result: | Runner-up |
The 1918–19 Washington State Cougars men's basketball team represented Washington State College for the college basketball season. Led by eleventh-year head coach Fred Bohler, the Cougars were members of the Pacific Coast Conference and played their home games on campus in Pullman, Washington.
The Cougars were overall in the regular season and in conference play, second in the standings.