2018–19 Stephen F. Austin Lumberjacks basketball team

The 2018–19 Stephen F. Austin Lumberjacks basketball team represented Stephen F. Austin State University during the 2018–19 NCAA Division I men's basketball season. The Lumberjacks were led by third-year head coach Kyle Keller and played their home games at the William R. Johnson Coliseum in Nacogdoches, Texas as members of the Southland Conference. They finished the season 14–16 overall, 7–11 in Southland play to finish in a tie for ninth place. Since only the top eight teams are eligible to play in the Southland tournament, the Lumberjacks failed to qualify this season.

On May 20, 2020, following the discovery of an administrative error in certifying eligibility for student-athletes, Stephen F. Austin reached an agreement with the NCAA to vacate hundreds of wins across multiple sports from 2013 to 2019, including all 117 men's basketball wins from the 2014–15 to 2018–19 seasons.

Previous season
The 2017–18 Stephen F. Austin Lumberjacks basketball team finished the season 28–7, 14–4 in Southland play to finish in third place. They defeated Central Arkansas, Nicholls State, and Southeastern Louisiana to become champions of the Southland tournament. They received the Southland's automatic bid to the NCAA tournament where they lost in the first round to Texas Tech.

Schedule and results
Sources:

!colspan=9 style=| Non-conference regular season

!colspan=9 style=| Southland regular season