The 1951 Washington State Cougars football team was an American football team that represented Washington State College during the 1951 college football season.

Second-year head coach Forest Evashevski led the team to a 4–3 mark in the Pacific Coast Conference (PCC) and 7–3 overall.

[1] Three home games were played on campus in Pullman at Rogers Field, and two in Spokane, both at night.

[2][3] The Cougars defeated rival Washington by two points for their first win in Seattle in 21 years,[4][5][6] and were in the top twenty in both final polls.

After the season, Evashevski left for Iowa in early January,[7][8][9] and backs coach Al Kircher was promoted the following week.