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| Founded | 2021 |
|---|---|
| Country |  New Zealand |
| Confederation | OFC (Oceania) |
| Number of clubs | 10 |
| Level on pyramid | 2 |
| Feeder to | National League |
| Relegation to | Canterbury Premiership Nelson Bays Premiership Southern Premiership |
| Domestic cup(s) | Chatham Cup |
| Current champions | Cashmere Technical (2nd title) (2024) |
| Most championships | Cashmere Technical Christchurch United (2 titles each) |
| TV partners | FIFA+ (select games) |
| Website | Mainland Football |
| Current: 2024 Southern League | |
The Southern League is an amateur status league competition run by Southern Football and Mainland Football for Association football clubs located in the South Island of New Zealand. It is at the second level of New Zealand Football behind the national association based New Zealand National League, and the highest level of club based football available to teams within the region.