| Competition: | sanfl |
| Year: | 1989 |
| Teams: | 10 |
| Count: | 29 |
| Mpcount: | 15 |
| Matches: | 116 |
| Attendance: | 901651 |
| Highattend: | 50,487 (Grand Final, vs.) |
| Top Goal Scorer: | Rudi Mandemaker (93 goals) |
| Magarey Medal: | Gilbert McAdam |
| Prevseason: | 1988 |
| Nextseason: | 1990 |
The 1989 South Australian National Football League season was the 110th season of the top-level Australian rules football competition in South Australia.
See main article: 1989 SANFL Grand Final.