The 2021 Sun Belt Conference football season was the 21st season of college football play for the Sun Belt Conference. The season began September 2, 2021 and concluded with its championship game on December 4, 2021. It was part of the 2021 NCAA Division I FBS football season. The Sun Belt Conference consists of 10 football members split into two divisions. The conference released its schedule on March 1, 2021.