| Competition: | sanfl |
| Year: | 2004 |
| Teams: | 9 |
| Count: | 4 |
| Mpcount: | 7 |
| Matches: | 96 |
| Attendance: | 312360 |
| Highattend: | 24,207 (Grand Final, vs.) |
| Top Goal Scorer: | Daniel Schell (63 Goals) |
| Magarey Medal: | Paul Thomas (22 votes) |
| Prevseason: | 2003 |
| Nextseason: | 2005 |
The 2004 South Australian National Football League season was the 125th season of the top-level Australian rules football competition in South Australia.