| Mode: | Basketball |
| Sex: | none |
| Year: | 2008–09 |
| Prev Year: | 2007–08 |
| Next Year: | 2009–10 |
| Team: | Stephen F. Austin Lumberjacks |
| Conference: | Southland Conference |
| Division: | East |
| Short Conf: | Southland |
| Record: | 24–8 |
| Conf Record: | 13–3 |
| Hc Year: | 9th |
| Ac1 Year: | 2nd |
| Champion: | Southland Regular Season and Tournament Champions |
| Tourney Result: | First Round |
The 2008–09 Stephen F. Austin Lumberjacks basketball team represented Stephen F. Austin University during the 2008–09 NCAA Division I men's basketball season. The Lumberjacks were led by head coach Danny Kaspar and played their home games at the William R. Johnson Coliseum. They were members of the Southland Conference. The Lumberjacks finished the season 24–8, 13–3 in Southland play to claim the Southland regular season championship. They were champions of the Southland Conference tournament to earn an automatic bid to the NCAA tournament - the first appearance in school history. As No. 14 seed in the South region, they lost in the Round of 64 to No. 3 seed Syracuse.[1]
|-!colspan=9 style=| Non-Conference Regular season|-!colspan=9 style=| Southland Regular season|-!colspan=9 style=| Southland tournament|-!colspan=9 style=| NCAA tournament[3] [4]