The 1947 Washington State Cougars football team was an American football team that represented Washington State College in the Pacific Coast Conference (PCC) during the 1947 college football season. Phil Sarboe, in his third of five seasons as head coach at Washington State, led the team to a 2–5 mark in the PCC and 3–7 overall.
Washington State was ranked at No. 64 (out of 500 college football teams) in the final Litkenhous Ratings for 1947.
The Cougars' three home games were played on campus in Pullman at Rogers Field, with a nearby road game in Moscow against Palouse neighbor Idaho.