2018–19 Regionalliga Südwest

The 2018–19 Regionalliga is the elventh season of the Regionalliga, the seventh under the new format, as the fourth tier of the German football league system.

18 teams from Baden-Württemberg, Hesse, Rhineland-Palatinate and Saarland compete in the seventh season of the Regionalliga Südwest. FC 08 Homburg and FK Pirmasens were promoted from the 2017–18 Oberliga Rheinland-Pfalz/Saar, TSG Balingen was promoted from the 2017–18 Oberliga Baden-Württemberg and Hessen Dreieich was promoted from the 2017–18 Hessenliga.