Railway companies of Oklahoma

List of railway companies in the American state of Oklahoma.

Class I railways

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

Regional railways

 * Stillwater Central Railroad (SLWC), freight and passenger

Shortline and terminal railways

 * Arkansas-Oklahoma Railroad (AOK), freight
 * Arkansas Southern Railroad (ARS), freight
 * AT&L Railroad (ATLT), freight
 * Blackwell Northern Gateway Railroad (BNGR), freight
 * Cimarron Valley Railroad (CVR), freight
 * Farmrail (FMRC), freight
 * Grainbelt (GNBC), freight
 * Kiamichi Railroad (KRR), freight
 * Northwestern Oklahoma Railroad (NOKL), freight
 * Port of Catoosa Industrial Railroad (PCIR), freight
 * Port of Muskogee Railroad (PMR), freight
 * Sand Springs Railway (SS), freight and passenger
 * South Kansas & Oklahoma Railroad (SKOL), freight
 * Texas, Oklahoma & Eastern Railroad (TOE), freight
 * Tulsa-Sapulpa Union Railway (TSU), freight
 * Wichita, Tillman & Jackson Railway (WTJR), freight

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