| Year: | 2003 |
| Team: | Grambling State Tigers |
| Sport: | football |
| Conference: | Southwestern Athletic Conference |
| Short Conf: | SWAC |
| Division: | West Division |
| Tsnrank: | 17 |
| Record: | 9–3 |
| Conf Record: | 6–1 |
| Head Coach: | Doug Williams |
| Hc Year: | 6th |
| Off Coach: | Melvin Spears |
| Oc Year: | 6th |
| Stadium: | Eddie G. Robinson Memorial Stadium |
The 2003 Grambling State Tigers football team represented Grambling State University as a member of the Southwestern Athletic Conference (SWAC) during the 2003 NCAA Division I-AA football season. Led by sixth-year head coach Doug Williams, the Tigers compiled an overall record of 9–3 and a mark of 6–1 in conference play, and finished as co-champion of the SWAC West Division.