[3] The league was won by SpVgg Neckarelz which thereby earned promotion to the Regionalliga Südwest for 2013–14.
Offenburger FV, FSV 08 Bissingen and FC Singen 04 were relegated to the Verbandsligas.
[1] FC Nöttingen's game against TSV Grunbach attracted the most spectators for the season with 2,070 while SSV Reutlingen was the best supported club with an average of 698 spectators per game.
The Karlsruher SC II had been relegated from the Regionalliga Süd to the Oberliga Baden-Württemberg in the previous season.
In the first round the runners up of Südbaden and Baden met with the winner then taking on the Württemberg runners-up.