| Year: | 2005 |
| Team: | Grambling State Tigers |
| Sport: | football |
| Conference: | Southwestern Athletic Conference |
| Short Conf: | SWAC |
| Division: | West Division |
| Tsnrank: | 11 |
| Record: | 11–1 |
| Conf Record: | 9–0 |
| Head Coach: | Melvin Spears |
| Hc Year: | 2nd |
| Stadium: | Eddie G. Robinson Memorial Stadium |
| Champion: | Black college national champion SWAC champion |
| Conf Champ: | SWAC Championship Game |
| Conf Champ Result: | W 45–5 vs. Alabama A&M |
The 2005 Grambling State Tigers football team represented Grambling State University as a member of the Southwestern Athletic Conference (SWAC) during the 2005 NCAA Division I-AA football season. Led by second-year head coach Melvin Spears, the Tigers compiled an overall record of 11–1 and a mark of 9–0 in conference play, and finished as both SWAC and black college national champion.[1]