The 2021 Oregon State Beavers football team represented Oregon State University during the 2021 NCAA Division I FBS football season.

They were led by fourth-year head coach Jonathan Smith.

The team played their home games on campus at Reser Stadium in Corvallis, Oregon, as a member of the North Division of the Pac-12 Conference.

Defensive Coordinator Tim Tibesar's contract was terminated on November 7, the day after their 37–34 loss to Colorado.

at California Memorial Stadium • Berkeley, CA