Railway companies of Colorado

List of railway companies in the American state of Colorado.

Class I railways

 * Amtrak (AMTK), passenger on freight lines
 * Burlington Northern & Gulf Railroad (BNG), freight
 * Kansas City-Santa Fe Railroad (KCSF), freight
 * New York Western Railroad (NYW), freight
 * Union Pacific Railroad (UP), freight

Regional railways

 * Kansas & Oklahoma Railroad (KO), freight
 * Kyle Railroad (KYLE), freight
 * Nebraska Kansas Colorado Railway (NKCR), freight
 * Utah Railway (UTAH), freight

Shortline and terminal railways

 * Cimarron Valley Railroad (CVR), freight
 * Colorado Pacific Railroad (CXR), freight
 * Colorado Pacific Rio Grande Railroad (SLRG), freight
 * Colorado & Wyoming Railway (CW), freight
 * Denver Rock Island Railroad (DRIR), freight
 * Deseret Power Railway (DPRW), freight
 * Great Western Railway of Colorado (GWR), freight
 * Hudson Terminal Railroad (HTR), freight
 * Keenesburg Direct Railroad (KDR), freight
 * Rock & Rail (RRRR), freight
 * San Luis Central Railroad (SLC), freight

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