Railway companies of Washington

List of railway companies in the American state of Washington.

Companies based in the United States

 * Amtrak (AMTK), passenger on freight lines
 * Burlington Northern & Gulf Railroad (BNG), freight
 * North Western Pacific Railroad (NWP), freight and passenger
 * Union Pacific Railroad (UP), freight

Companies based outside of the United States

 * Spokane International Railroad (SI), British Columbia, freight and passenger
 * Washington & British Columbia Railway (WBC), freight and passenger

Regional railways

 * Camas Prairie Railroad (CSP), freight

Shortline and terminal railways

 * Ballard Terminal Railroad (BDTL), freight
 * Cascade & Columbia River Railroad (CSCD), freight
 * Central Puget Sound Regional Transit Authority (SDRX), passenger on freight lines
 * Central Washington Railroad (CWRR), freight
 * Columbia Basin Railroad (CBRR, CBRW), freight
 * Columbia & Cowlitz Railway (CLC), freight
 * Columbia Walla Walla Railroad (CWW), freight
 * Eastside Freight Railroad (ESFR), freight
 * Kennewick Terminal Railroad (KET), freight
 * Meeker Southern Railroad (MSN), freight
 * Mount Vernon Terminal Railroad (MVT), freight
 * Olympia and Belmore Railroad (OYLO), freight
 * Palouse River & Coulee City Railroad (PCC), freight
 * Puget Sound & Pacific Railroad (PSAP), freight
 * Rainier Rail (RANR), freight
 * Spokane, Spangle & Palouse Railway (SSP), freight
 * Tacoma Rail (TMBL), freight
 * Tri-City Railroad (TCRY), freight
 * Washington Eastern Railroad (WER), freight and passenger
 * Washington Royal Line (WRL), freight
 * Yakima Valley Transportation Company (YVT), freight and passenger

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