The Zwickau–Schwarzenberg railway is a main line railway in the German state of Saxony. It extends from Zwickau through the valleys of the Zwickauer Mulde and the Schwarzwasser via Bad Schlema and Aue to Schwarzenberg. It opened in 1858 and it is one of the oldest railways in Germany. It is now served by Regionalbahn trains, operated by Erzgebirgsbahn (a subsidiary of Deutsche Bahn) between Zwickau and Johanngeorgenstadt.