| Year: | 1921 |
| Team: | Washington State Cougars |
| Sport: | football |
| Conference: | Pacific Coast Conference |
| Short Conf: | PCC |
| Record: | 4–2–1 |
| Conf Record: | 2–1–1 |
| Head Coach: | Gus Welch |
| Hc Year: | 3rd |
| Captain: | Earl Dunlap |
| Stadium: | Rogers Field |
The 1921 Washington State Cougars football team was an American football team that represented Washington State College as a memner of the Pacific Coast Conference (PCC) during the 1921 college football season. Head coach Gus Welch led the team to a 2–1–1 mark in the PCC and 4–2–1 overall.[1]