The Royal Division of the Aachen-Düsseldorf-Ruhrort Railway (German: Königliche Direction der Aachen-Düsseldorf-Ruhrorter Eisenbahn) was a railway division controlled by the Prussian government that was founded in 1850 and taken over by the Bergisch-Märkische Railway Company in 1862. It was based in Aachen and founded on 4 March 1850, taking over the operation from 1 April 1850 of two railway companies that had been working together since their founding: