The Winterswijk–Gelsenkirchen-Bismarck railway is a formerly continuous, 59 kilometre-long railway line, built by the former Dutch Westphalian Railway Company, from Winterswijk in the Netherlands to Bismarck, now part of Gelsenkirchen, in the northern Ruhr region of the German state of North Rhine-Westphalia.

The Bergisch-Markisch Railway Company, 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 and the Rhenish Railway Company 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.