In tribute to the forestry industry, which is a major component of the area's economy, the men's athletic teams are called
Lumberjacks, and women's teams are known as Ladyjacks.
Lumberjacks name was chosen in 1923, when T. E. Ferguson, a professor of English at SFA, submitted name to the students and faculty assembly. The choice was made given the university's location in the Piney Woods, where forestry and timber products are a major part of the area's economy. Men's NCAA sports include baseball, basketball, cross country, football, golf, indoor & outdoor track and field. Women's NCAA sports include basketball, beach volleyball, bowling, cross country, golf, indoor & outdoor track and field, soccer, softball, tennis, and (indoor) volleyball. SFA's
football team competes in the
NCAA Division I Football Championship Subdivision (FCS) in the
United Athletic Conference (UAC), formed after the 2022 season as a football-only merger of the WAC and
ASUN Conference. SFA's football team earned a berth into the FCS playoffs in 2009, which was the first for the university since 1995. The team also earned a playoff berth in 2010, marking the first time in the program's history that the team had reached the playoffs in consecutive seasons. The 2010 season also marked the first time that the school had won an outright conference championship since 1989. Stephen F. Austin's only
bowl appearance was the 1973
Poultry Bowl, in which the team defeated Gardner–Webb 31–10. The men's basketball team reached its first NCAA tournament in
2009 after winning the Southland Conference regular season and tournament. They lost 59–44 to Syracuse. In their second appearance in
2014, they upset VCU in overtime, 77–75. In their third appearance in
2016, they upset 3rd seeded West Virginia 70–56. In the second round against 6th seeded Notre Dame they lost 77–76 on a buzzer beater by Notre Dame's Rex Pflueger. On November 26, 2019, in arguably the biggest upset in
NCAA Division I basketball in 15 years, SFA upset #1-ranked Duke in overtime by a score of 85–83. This was the first home game against a nonconference opponent that Duke had lost in the Blue Devils' past 150 home games. In 2020, the athletic department of Stephen F. Austin was found by the NCAA to have had several administrative errors in reporting the grades of the student athletes from 2013 to 2019, which resulted in the university having
academically ineligible players to be on rosters. As a result, the SFA's football, men and women's basketball teams victories from this time span (including the 2016 men's basketball team win over WVU and the Southland Conference titles from 2014 to 2018) had to be vacated. In July 2021, SFA joined the
Western Athletic Conference. SFA houses three sports outside the WAC—football in the UAC; beach volleyball (a women-only NCAA sport) in the
Sun Belt Conference; and bowling (another women-only sport) in
Conference USA, which absorbed SFA's former bowling home of the
Southland Bowling League after the 2022–23 season. In July 2024, SFA left the WAC and joined the
Southland Conference along with another Texas school, the University of Texas-Rio Grande Valley. ==Notable alumni and faculty==