Railway companies of Maryland

List of railway companies in the American state of Maryland.

Class I railways

 * Amtrak (AMTK), passenger on freight lines
 * Chesapeake Southern Railway (CHS), freight
 * New York Western Railroad (NYW), freight
 * Pennsylvania Seaboard Railroad (PS), freight

Regional railways

 * Wheeling & Lake Erie Railway (WLE), freight

Shortline and terminal railways

 * Canton Railroad (CTN), freight
 * Delmarva Central Railroad (DCR), freight
 * Georges Creek Railway (GCK), freight
 * MARC Train (MARC), passenger on freight lines
 * Maryland & Delaware Railroad (MDDE), freight
 * Maryland Midland Railway (MMID), freight
 * Tradepoint Rail (TPR), freight
 * Winchester & Western Railroad (WW), freight

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