List of railroads in Washington, D.C.

The following railroads operate or once operated in the District of Columbia.

Freight

 * CSX Transportation (CSXT)

Passenger

 * Amtrak (AMTK)

Commuter

 * MARC Train (MARC)
 * Virginia Railway Express (VREX)
 * Washington Metro

Electric

 * Alexandria, Barcroft and Washington Transit Company
 * Anacostia and Potomac River Railroad
 * Baltimore and Ocean City Railway
 * Baltimore and Washington Transit Company
 * Brightwood Railway
 * Capital Traction Company
 * Capital Transit Company
 * Capitol, North O Street and South Washington Railway
 * City and Suburban Railway
 * Columbia Railway
 * Georgetown and Tennallytown Railway
 * Great Falls and Old Dominion Railroad
 * Metropolitan Railroad
 * Rock Creek Railway
 * Tennallytown and Rockville Railroad
 * Washington and Georgetown Railroad
 * Washington and Glen Echo Railroad
 * Washington and Great Falls Electric Railway
 * Washington and Old Dominion Railway
 * Washington and Rockville Railway
 * Washington, Baltimore and Annapolis Electric Railroad
 * Washington, Baltimore and Annapolis Electric Railway
 * Washington, Berwyn and Laurel Electric Railway
 * Washington Interurban Railway
 * Washington Railway and Electric Company
 * Washington, Spa Springs and Gretta Railroad
 * Washington Traction and Electric Company
 * Washington–Virginia Railway
 * Washington, Woodside and Forest Glen Railway and Power Company