1991 Washington State Cougars football team

The 1991 Washington State Cougars football team was an American football team that represented Washington State University in the Pacific-10 Conference (Pac-10) during the 1991 NCAA Division I-A football season. In their third season under head coach Mike Price, the Cougars compiled a 4–7 record (3–5 in Pac-10, tied for sixth), and were outscored by their opponents 340 to 280.

The team's statistical leaders included Drew Bledsoe with 2,741 passing yards, Shaumbe Wright-Fair with 843 rushing yards, and Phillip Bobo with 759 receiving yards.

NFL Draft
Four Cougars were selected in the 1992 NFL Draft.