| Organising body | Football South Australia |
|---|---|
| First season | 2013 |
| Country |  Australia |
| State |  South Australia |
| Confederation | AFC |
| Number of clubs | 46
|
| Level on pyramid | 4 and 5 (notionally) |
| Promotion to | National Premier Leagues SA |
| Domestic cup(s) | National Australia Cup State Federation Cup |
| Current champions | SL1: Adelaide Raiders (2026) SL2: Pontian Eagles (2026) |
| Current premiers | SL1: Adelaide Raiders (2026) SL2N: Pontian Eagles (2026) SL2S: Vipers FC (2026) |
| Most championships | State League 1 (3 titles) State League 2 (2 titles) |
| Broadcaster | YouTube (SL1 only) |
| Website | footballsa.com.au |
State League South Australia is a series of semi-professional and amateur soccer leagues in the Australian state of South Australia. It consists of State League 1 South Australia (SL1) and State League 2 South Australia (SL2), which comprise the second and third tiers of soccer in South Australia and the third and fourth tiers of soccer in Australia. The league was founded in 2012 as a successor to the FFSA Premier and State Leagues and is managed by Football South Australia.
State League 1 is a single division of 12 teams who play home and away in the regular season. The team that finishes top of the ladder are crowned premiers and win promotion to the National Premier Leagues South Australia (NPL SA), with the top six teams qualifying for a finals series, culminating in early September with a Grand Final. The winners of the Grand Final are crowned champions and are promoted to the NPL SA, unless they have already won promotion as premiers, in which case the other Grand Finalist is awarded promotion.
State League 2 consists of a North (SL2N) and South (SL2S) division, each consisting of twelve teams who play each other twice over the course of the regular season, with the top four teams of each conference qualifying for the promotion playoffs. The two premiers play each other in a championship match, with the winner gaining promotion to State League 1, and the loser joining the bracket with the other six teams, who play for the second promotion spot.