| Competition: | sanfl |
| Year: | 1945 |
| Teams: | 8 |
| Count: | 3 |
| Mpcount: | 21 |
| Matches: | 72 |
| Highattend: | 47,500 (Grand Final, vs.) |
| Top Goal Scorer: | S Scott (64 Goals) |
| Magarey Medal: | Bob Quinn (46 votes) |
| Prevseason: | 1944 |
| Nextseason: | 1946 |
The 1945 South Australian National Football League season was the 66th season of the top-level Australian rules football competition in South Australia.
See main article: 1945 SANFL Grand Final.