The Bergisch-Markisch Railway Company (German: Bergisch-Märkische Eisenbahn-Gesellschaft, BME), also referred to as the Berg-Mark Railway Company or, more rarely, as the Bergisch-Markische Railway Company, was a German railway company that together with the Cologne-Minden Railway (Cöln-Mindener Eisenbahn-Gesellschaft, CME) and the Rhenish Railway Company (Rheinische Eisenbahn-Gesellschaft, RhE) was one of the three (nominally) private railway companies that in the mid-19th century built the first railways in the Ruhr and large parts of today's North Rhine-Westphalia. Its name refers to Bergisches Land and the County of Mark.