The 2011–12 season was the 109th in the history of the Southern League, which is an English football competition featuring semi-professional and amateur clubs from the South West, South Central and Midlands of England and South Wales. The league allocations were released on 20 May 2011. From this season onwards, the Southern League was known as The Evo-Stik League Southern, following a sponsorship deal with Evo-Stik.