The 2020 Stephen F. Austin football team represented Stephen F. Austin State University in the 2020–21 NCAA Division I FCS football season as a member of the Southland Conference.

The Lumberjacks were led by second-year head coach Colby Carthel and played their home games at Homer Bryce Stadium.

The Southland Conference released their original preseason poll in July 2020.

The Lumberjacks were picked to finish eighth in the conference, prior to their schedule split from the rest of the league.

Stephen F. Austin had a game scheduled against Alabama A&M, but was canceled due to the COVID-19 pandemic.