The Hagen–Hamm railway is a continuous two-track, electrified main line in the German state of North Rhine-Westphalia, connecting Hagen via Schwerte, Holzwickede and Unna to Hamm.
The railway line from Hagen to Hamm was built by the Bergisch-Märkische Railway Company (German: Bergisch-Märkische Eisenbahn-Gesellschaft, BME) to link its existing Elberfeld–Dortmund and Dortmund–Soest lines as well as Hamm station.
The section between Holzwickede and Unna was opened by the BME on 9 July 1855 as part of its Dortmund–Soest line.
[2] Ten years later, on 18 January 1866, the section from Unna to Hamm was made available for passenger traffic,[3] while the section from Hagen to Holzwickede opened a year later on 1 April 1867.
The section between Holzwickede and Unna is also served by Regionalbahn service RB 59, Hellweg-Bahn.