| Season: | 1991 |
| Nextseason: | 1992 |
The 1991 South Australian Soccer Federation season was the 85th season of soccer in South Australia.
| Competition: | SASF Division One |
| Season: | 1991 |
| Matches: | 132 |
| Total Goals: | 372 |
| Prevseason: | 1990 |
| Nextseason: | 1992 |
The 1991 South Australian Division One season was the 85th season of first division soccer in South Australia.[1]
West Adelaide Hellas were champions for the 10th time. Blackwood were relegated. West Adelaide Hellas and Adelaide City both withdrew from SASF competitions at the end of the season.
| Competition: | SASF Division Two |
| Season: | 1991 |
| Matches: | 90 |
| Total Goals: | 231 |
| Prevseason: | 1990 |
| Nextseason: | 1992 |
The 1991 South Australian Division Two season was the 67th season of second division soccer in South Australia.[2]
Elizabeth City were champions for the third time, and were promoted.
The 1991 Top Four Cup, known as the 1991 Coca-Cola Cup for sponsorship reasons, was the 23rd and final edition of the Top Four Cup, a post-season knockout competition contested by the top four teams from the Division One season.
Salisbury United won the competition for the first time.