| Year: | 1917 |
| Team: | Washington State |
| Sport: | football |
| Conference: | Northwest Conference |
| Short Conf: | Northwest |
| Conference2: | Pacific Coast Conference |
| Short Conf2: | PCC |
| Record: | 6–0–1 |
| Conf Record: | 5–0 |
| Conf2 Record: | 3–0 |
| Head Coach: | William Henry Dietz |
| Hc Year: | 3rd |
| Off Scheme: | Single-wing |
| Captain: | Clarence Zimmerman |
| Stadium: | Rogers Field |
| Champion: | Northwest Conference champion PCC champion |
The 1917 Washington State football team represented Washington State College—now known as Washington State University as a member of the Northwest Conference and the Pacific Coast Conference (PCC) during the 1917 college football season. Led by William Henry Dietz in his third and final season as head coach, Washington State compiled an overall record of 6–0–1, with marks of 5–0 in Northwest Conference play, and 3–0 against PCC opponents, winning both conference titles.[1] The team played home games on campus, at Rogers Field in Pullman, Washington.
Washington State defeated in-state rival Washington for the first time in a decade.[2] [3] [4]