| Competition: | South Australian Soccer Federation |
| Season: | 1990 |
| Prevseason: | 1989 |
| Nextseason: | 1991 |
The 1990 South Australian Soccer Federation season was the 84th season of soccer in South Australia.
| Competition: | SASF Division One |
| Season: | 1990 |
| Matches: | 132 |
| Total Goals: | 350 |
| Prevseason: | 1989 |
| Nextseason: | 1991 |
The 1990 South Australian Division One season was the 84th season of first division soccer in South Australia.[1]
West Adelaide Hellas were champions for the ninth time. Cumberland United and Port Adelaide were relegated.
| Competition: | SASF Division Two |
| Season: | 1990 |
| Matches: | 90 |
| Total Goals: | 191 |
| Prevseason: | 1989 |
| Nextseason: | 1991 |
The 1990 South Australian Division Two season was the 66th season of second division soccer in South Australia.[2]
Para Hills were champions for the second time, and were promoted with Blackwood.
The 1990 Top Four Cup, known as the 1990 Coca-Cola Cup for sponsorship reasons, was the 22nd edition of the Top Four Cup, a post-season knockout competition contested by the top four teams from the Division One season.
Eastern Districts Azzurri won the competition for the third time.