| Year: | 2004 |
| Team: | SMU Mustangs |
| Sport: | football |
| Conference: | Western Athletic Conference |
| Short Conf: | WAC |
| Record: | 3–8 |
| Conf Record: | 3–5 |
| Head Coach: | Phil Bennett |
| Hc Year: | 3rd |
| Off Coach: | Rusty Burns |
| Oc Year: | 1st |
| Off Scheme: | Spread |
| Def Coach: | Jim Gush |
| Dc Year: | 3rd |
| Def Scheme: | 4–3 |
The 2004 SMU Mustangs football team represented Southern Methodist University (SMU) as a member the Western Athletic Conference (WAC) during the 2004 NCAA Division I-A football season. Led by third-year head coach Phil Bennett, the Mustangs compiled an overall record of 3–8 with a mark of 3–5 in conference play, tying for sixth place in the WAC.[1]