| Competition: | sanfl |
| Year: | 1957 |
| Teams: | 8 |
| Count: | 18 |
| Mpcount: | 27 |
| Matches: | 76 |
| Attendance: | 849369 |
| Highattend: | 58,924 (Grand Final, vs.) |
| Top Goal Scorer: | Peter Phipps (90 Goals) |
| Magarey Medal: | Ron Benton Jim Deane |
| Prevseason: | 1956 |
| Nextseason: | 1958 |
The 1957 South Australian National Football League season was the 78th season of the top-level Australian rules football competition in South Australia.