| Year: | 2003 |
| Team: | Jacksonville State Gamecocks |
| Sport: | football |
| Conference: | Ohio Valley Conference |
| Short Conf: | OVC |
| Tsnrank: | 18 |
| Record: | 8–4 |
| Conf Record: | 7–1 |
| Head Coach: | Jack Crowe |
| Hc Year: | 4th |
| Off Coach: | Willie J. Slater |
| Oc Year: | 4th |
| Def Coach: | Greg Stewart |
| Dc Year: | 4th |
| Stadium: | Paul Snow Stadium |
| Champion: | OVC champion |
| Bowl: | NCAA Division I-AA First Round |
| Bowl Result: | L 7–45 at Western Kentucky |
The 2003 Jacksonville State Gamecocks football team represented Jacksonville State University as a member of the Ohio Valley Conference (OVC) during the 2003 NCAA Division I-AA football season. Led by Forth-year head coach Jack Crowe, the Gamecocks compiled an overall record of 8–4 with a mark of 7–1 in conference play, winning the OVC title in their first year in the league and first conference title since transitioning to NCAA Division I-AA competition. Jacksonville State advanced to the NCAA Division I-AA Football Championship playoffs for the first time, losing in the first round to Western Kentucky. The team played home games at Paul Snow Stadium in Jacksonville, Alabama.