1990 SASF season

The 1990 South Australian Soccer Federation season was the 84th season of soccer in South Australia.

1990 SASF Division One
The 1990 South Australian Division One season was the 84th season of first division soccer in South Australia.

West Adelaide Hellas were champions for the ninth time. Cumberland United and Port Adelaide were relegated.

1990 SASF Division Two
The 1990 South Australian Division Two season was the 66th season of second division soccer in South Australia.

Para Hills were champions for the second time, and were promoted with Blackwood.

1990 Top Four Cup
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.