| Season: | 1998 |
| Nextseason: | 1999 |
The 1998 South Australian Soccer Federation season was the 92nd season of soccer in South Australia.
| Competition: | SASF Premier League |
| Season: | 1998 |
| Winners: | Grand Final West Torrens Birkalla Minor Premiership West Torrens Birkalla |
| Matches: | 90 |
| Total Goals: | 277 |
| Biggest Home Win: | West Torrens Birkalla 6–1 Elizabeth City (15 August 1998) |
| Biggest Away Win: | 4 goals (4 times) |
| Highest Scoring: | Croydon Kings 5–4 Adelaide Raiders (13 June 1998) |
The 1998 South Australian Premier League season was the top level domestic association football competition in South Australia for 1998. It was contested by 10 teams in a single 18 round league format, each team playing all of their opponents twice.[1]
| Competition: | SASF State League |
| Season: | 1998 |
| Promoted: | Modbury Jets Para Hills Knights |
| Matches: | 132 |
| Total Goals: | 477 |
| Biggest Home Win: | Adelaide City 7–0 Para Hills Knights (23 May 1998) West Adelaide 7-0 Port Pirie City (20 June 1998) |
| Biggest Away Win: | Port Pirie City 0–6 Para Hills Knights (27 June 1998) |
| Highest Scoring: | Seaford Rangers 5–3 Para Hills Knights (21 March 1998) Port Pirie City 3–5 West Adelaide (4 April 1998) |
The 1998 South Australian State League season was the second highest domestic level association football competition in South Australia. It was contested by 12 teams in a 22 round league format, each team playing all of their opponents twice. West Adelaide and Adelaide City refused to take part in the finals series.[2]