| Competition: | safa |
| Year: | 1905 |
| Teams: | 7 |
| Count: | 3 |
| Mpcount: | 2 |
| Matches: | 45 |
| Highattend: | 11,000 (Grand Final, vs.) |
| Top Goal Scorer: | James Mathieson (30 goals) Anthony Daly (30 goals) |
| Magarey Medal: | Tom MacKenzie |
| Prevseason: | 1904 |
| Nextseason: | 1906 |
The 1905 South Australian Football Association season was the 29th season of the top-level Australian rules football competition in South Australia.