The 2025 Football South Australia season is the 119th season of soccer in South Australia. It is the 20th to be run by Football South Australia and the 13th under the National Premier Leagues banner.

State League 2 South Australia was expanded from 12 teams to 16, splitting into northern and southern conferences of eight teams each.

The 2025 National Premier Leagues South Australia season, known as the RAA National Premier League for sponsorship reasons, is the 119th season of first division soccer in South Australia, and the 13th under the National Premier Leagues banner. The premiers qualified for the inaugural season of the Australian Championship, the first intra-state post-season competition since the National Premier Leagues finals series in 2019.

The 2025 State League 1 South Australia season is the 102nd season of second division soccer in South Australia.

The 2025 State League 2 South Australia season is the 58th season of third division soccer in South Australia.

The 2025 Football South Australia Federation Cup was the 112th running of the Federation Cup, the main soccer knockout cup competition in South Australia. Teams from the National Premier Leagues SA, SA State League 1, SA State League 2, Regional Leagues and Amateur Leagues participated.