State League 1 South Australia is the second tier state-level football (soccer) competition in South Australia, ranked third tier in the national pyramid. The league is part of the National Premier Leagues (NPL) structure implemented by Football Federation Australia in 2012. It is conducted by Football South Australia (FSA), the state's governing body. After the reforming of the South Australian football league structure in 2012, the league increased its participants from 10 clubs to 16. Football South Australia announced a restructuring of the league format in South Australia for the 2016 to 2018 seasons, moving from a 2 tiered system to a 3 tiered system with the introduction of a new 3rd division (State League 2), which reduced the participants in the now State League 1 down to 12.

A-League team Adelaide United entered their youth team in the 2015 season.

The Australia South Australia State League 1 is a highly competitive soccer tournament held in the state of South Australia. It is one of the premier soccer leagues in the country, showcasing the best talent from the region.

The tournament features teams from various cities and regions within South Australia, including Adelaide, Port Adelaide, Salisbury, and Gawler, among others. These teams compete against each other in a round-robin format, with each team playing multiple matches throughout the season.

The Australia South Australia State League 1 attracts a diverse range of players, from aspiring young talents to experienced professionals. Many players in this league have gone on to represent their country at the national level or secure contracts with professional clubs both domestically and internationally.

The level of competition in the tournament is intense, with teams battling it out for the top spot and promotion to higher divisions. The matches are known for their fast-paced action, skillful displays, and passionate atmosphere, drawing in enthusiastic crowds of soccer fans.

The Australia South Australia State League 1 provides a platform for players to showcase their abilities and further their careers in the sport. It also serves as a breeding ground for future stars, with scouts and talent spotters often in attendance, looking for the next big talent.

Overall, the Australia South Australia State League 1 is a thrilling and highly regarded soccer tournament that celebrates the passion and talent of the sport in the region. It is a must-watch for soccer enthusiasts and a testament to the vibrant soccer culture in South Australia.