| Competition: | sanfl |
| Year: | 1951 |
| Teams: | 8 |
| Count: | 14 |
| Mpcount: | 22 |
| Matches: | 76 |
| Attendance: | 653105 |
| Highattend: | 41,997 (Grand Final, vs.) |
| Top Goal Scorer: | Colin Churchett (102 Goals) |
| Magarey Medal: | John Marriott |
| Prevseason: | 1950 |
| Nextseason: | 1952 |
The 1951 South Australian National Football League season was the 72nd season of the top-level Australian rules football competition in South Australia.