| Mode: | football |
| Year: | 2003 |
| Team: | New Mexico State Aggies |
| Sport: | football |
| Conference: | Sun Belt Conference |
| Short Conf: | Sun Belt |
| Record: | 3–9 |
| Conf Record: | 2–5 |
| Head Coach: | Tony Samuel |
| Hc Year: | 7th |
| Off Coach: | Gerry Gdowski |
| Oc Year: | 1st |
| Off Scheme: | Option |
| Def Coach: | Ross Els |
| Dc Year: | 1st |
| Def Scheme: | 4–3 |
| Stadium: | Aggie Memorial Stadium |
The 2003 New Mexico State Aggies football team represented New Mexico State University in the 2003 NCAA Division I-A football season. The Aggies were coached by head coach Tony Samuel and played their home games at Aggie Memorial Stadium in Las Cruces, New Mexico. They were members of the Sun Belt Conference.