Railway companies of North Dakota

List of railway companies in the American state of North Dakota.

Class I railways

 * Amtrak (AMTK), passenger on freight lines
 * North Western Pacific Railroad (NWP), freight and passenger
 * Pere Marquette Railway (PM), freight

Defunct railways
Years shown here refer to the period in which a given company operated in North Dakota; they may have existed elsewhere before or after these years.