The 2013 Stephen F. Austin Lumberjacks football team represented Stephen F. Austin State University in the 2013 NCAA Division I FCS football season. The Lumberjacks were led by seventh-year head coach J. C. Harper and played their home games at Homer Bryce Stadium. They were a member of the Southland Conference. They finished the season 3–9, 1–6 in Southland play to finish in a tie for seventh place.