| Year: | 2003 |
| Team: | Southern Jaguars |
| Sport: | football |
| Conference: | Southwestern Athletic Conference |
| Division: | West Division |
| Short Conf: | SWAC |
| Tsnrank: | 13 |
| Record: | 12–1 |
| Conf Record: | 6–1 |
| Head Coach: | Pete Richardson |
| Hc Year: | 11th |
| Stadium: | A. W. Mumford Stadium |
| Champion: | Black college national champion SWAC champion SWAC West Division champion |
| Conf Champ: | SWAC Football Championship Game |
| Conf Champ Result: | W 20–9 vs. Alabama State |
The 2003 Southern Jaguars football team represented Southern University as a member of the Southwestern Athletic Conference (SWAC) during the 2003 NCAA Division I-AA football season. Led by 11th-year head coach Pete Richardson, the Jaguars compiled an overall record of 12–1, with a conference record of 6–1, and finished as SWAC champion after they defeated Alabama State in the SWAC Football Championship Game. At the conclusion of the season, the Jaguars were also recognized as black college national champion.