| Competition: | sanfl |
| Year: | 2005 |
| Teams: | 9 |
| Count: | 5 |
| Mpcount: | 8 |
| Matches: | 96 |
| Attendance: | 303026 |
| Highattend: | 28,637 (Grand Final, vs.) |
| Top Goal Scorer: | Daniel Schell (67 Goals) |
| Magarey Medal: | Jeremy Clayton (24 votes) |
| Prevseason: | 2004 |
| Nextseason: | 2006 |
The 2005 South Australian National Football League season was the 126th season of the top-level Australian rules football competition in South Australia.