The Südwestdeutsche Landesverkehrs-GmbH (SWEG), in English language Southwest German Transport Company, from its former name, Südwestdeutsche Eisenbahn-Gesellschaft (SEG), is a transport company in southwest Germany that operates railway lines and bus services.

[1] On 24 July 2017, a merger between SWEG and the Hohenzollerische Landesbahn (HzL) was approved by the Sigmaringen and Zollernalbkreis district authorities which each hold 14% stakes in HzL.

The merger has already been approved by the state of Baden-Württemberg, which besides its ownership of SWEG also owns 72% of HzL.

[2] SWEG directly owns and operates the following railway lines: SWEG's wholly owned Ortenau S-Bahn subsidiary also operates services over lines owned by DB Netz AG in the vicinity of Offenburg.

This German rail transport related article is a stub.