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 team finished 6–4 for the program's first winning season since 2014. All four losses were against NCAA Division I FBS teams.