The 2011 Stephen F. Austin Lumberjacks football team represented Stephen F. Austin State University in the 2011 NCAA Division I FCS football season.
The Lumberjacks were led by fifth-year head coach J. C. Harper and played their home games at Homer Bryce Stadium.
They are a member of the Southland Conference.
They finished the season 6–5, 4–2 in Southland play to finish in third place.