The Deutsche Reichsbahn, also known as the German Reich Railway or the German Imperial Railway, was the name of the German national railway created from the railways of the individual states of the German Empire following the end of World War I.

The company was founded in 1920 as the Deutsche Reichseisenbahnen when the Weimar Republic, formally known as Deutsches Reich (German Reich, hence the usage of the Reich in the name of the railway), took national control of the German railways, which had previously been run by the German states. In 1924 it was reorganised under the aegis of the Deutsche Reichsbahn-Gesellschaft (DRG), a nominally private railway company, which was 100% owned by the German state. In 1937 the railway was reorganised again as a state authority and given the name Deutsche Reichsbahn (DRB). After the Anschluss in 1938 the DR also took over the Bundesbahn Österreich (BBÖ, Federal Railway of Austria).