The 2021 Stanford Cardinal football team represented Stanford University in the 2021 NCAA Division I FBS football season. The Cardinal were led by eleventh-year head coach David Shaw. They played their home games at Stanford Stadium as members of the North Division of the Pac-12 Conference. They finished the season 3–9, 2–7 in Pac-12 play, to finish last place in the North Division. This was Shaw's worst season ever and Stanford's worst record since the team went 1–11 in the 2006 season.