Railway companies of Arizona

List of railway companies in the American state of Arizona.

Class I railways

 * Amtrak (AMTK), passenger on freight lines
 * Kansas City-Santa Fe Railroad (KCSF), freight
 * North Western Pacific Railroad (NWP), freight and passenger

Shortline and terminal railways

 * Grand Canyon Railway (GCR), freight and passenger

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