The 2025 Stephen F. Austin Lumberjacks football team represented Stephen F. Austin State University as a member of the Southland Conference (SLC) during the 2025 NCAA Division I FCS football season. The Lumberjacks were coached by seventh-year head coach Colby Carthel and played at Homer Bryce Stadium in Nacogdoches, Texas. After a win against Lamar in week 12, the Lumberjacks clinched their first Southland Conference title since the 2010 season. SFA secured the seventh seed and a first-round bye in the 2025 FCS Playoffs. This was their first non-opening round home playoff game since the Division I-AA Quarterfinals in 1989. SFA's season ended on December 12, 2025 in the Quarterfinals of the FCS Playoffs, where the Lumberjacks were defeated by Montana State, 44-28.