| Competition: | sanfl |
| Year: | 1971 |
| Teams: | 10 |
| Count: | 10 |
| Mpcount: | 10 |
| Matches: | 109 |
| Attendance: | 1023433 |
| Highattend: | 52,228 (Grand Final, vs.) |
| Top Goal Scorer: | Fred Phillis (99 Goals) |
| Magarey Medal: | Russell Ebert |
| Prevseason: | 1970 |
| Nextseason: | 1972 |
The 1971 South Australian National Football League season was the 92nd season of the top-level Australian rules football competition in South Australia.
See main article: 1971 SANFL Grand Final.