Railway companies of Alaska

List of railway companies in the American state of Alaska.

Class I railways

 * Alaska Railroad (ARR)

Shortline and terminal railways

 * Seward Peninsular Railway (SPRY)
 * White Pass & Yukon Railway (WPY), 3' gauge

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