The 2011 Oregon State Beavers football team represented Oregon State University during the 2011 NCAA Division I FBS football season. The team's head coach was Mike Riley, in his ninth straight season and eleventh overall. Home games were played at Reser Stadium in Corvallis, and they are members of the North Division of the Pac-12 Conference. The Beavers finished the season 3–9 overall and 3–6 in Pac-12 play to finish in fifth place in the North Division. The team finished with their worst record since 1996.

The 2011 NCAA Division I FBS football season was the highest level of college football competition in the United States organized by the National Collegiate Athletic Association (NCAA).