The 2021 Michigan State Spartans football team represented Michigan State University during the 2021 NCAA Division I FBS football season. The Spartans competed as members of the East Division of the Big Ten Conference and played their home games at Spartan Stadium in East Lansing, Michigan. This was the program's second season under head coach Mel Tucker. On November 24, the school announced that they had signed Tucker to a 10-year, $95 million contract extension, all through donor money, amid speculations of Tucker being sought after for other college and NFL coaching positions.