The men's competitions consisted of three major divisions across the State. The season commenced on 9 April,[1] and finished with the State League 2 Grand final on 20 October, the State League 1 Grand final on 21 October, and the NPL Grand final on 22 October.
The 2021 National Premier League South Australia, known as the RAA National Premier League for sponsorship reasons,[2] was the ninth season of soccer under the competition format in South Australia. It is the first tier of South Australian soccer and the second tier of Australian soccer The Premier qualifies for the 2021 National Premier Leagues finals series. The fixtures were released on 5 March.[3]
The 2021 State League 1 South Australia is the ninth season of soccer under the competition format in South Australia. It is the second tier of South Australian soccer and the third tier of Australian soccer. The fixtures were released on 5 March.[4]
The 2021 State League 2 South Australia is the fifth season of soccer under the competition format in South Australia. It is the third tier of South Australian soccer and the fourth tier of Australian soccer. The fixtures were released on 5 March.[5]