FSA oversees the highest levels of soccer in South Australia, as well as collaborating with regional competitions and amateur leagues, and organise the Football SA Federation Cup.

Port Adelaide Pirates are the oldest team still in existence in South Australia, being founded in 1903, and competing in the 1904 season.

Alongside Adelaide University, these are the only South Australian clubs with history dating back to before World War II.

These immigrants would found multiple clubs that have survived to the current day: Juventus in 1946, Beograd in 1949, Polonia in 1950, Croatia in 1952, Napoli in 1958 and Hellas in 1962.

Other notable clubs founded during this period, now defunct, are: Burnside Budapest, which later merged with Campbelltown City to become Campbelltown Budapest; and Ukrainian SC Lion, which later merged with Port Adelaide to become Port Adelaide Lion, and now continue to participate in the South Australian Amateur Soccer League.

teams to have joined being Pontian Eagles in 2020, Modbury Vista in 2017, Fulham United and Vipers FC both in 2016, the latter two having won promotion to State League 1.

The most successful club is Adelaide City, with 19 titles to its credit, 7 of those coming since their return from the National Soccer League in 2004.