There are 57 railway companies operate in the US..

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"# United States

* Alaska Railroad
* Amtrak
* Atchison, Topeka & Santa Fe Railroad (AT&SF)
* Autotrain Corporation
* Bay Area Rapid Transit (BART)
* Boston & Maine Corporation (B&M)
* Baltimore and Ohio Railroad (B&O)
* Burlington Northern Railroad (BN)
* Burlington Northern Santa Fe Railway (BNSF)
* Central Pacific Railroad
* Chessie System
* Chicago, Burlington and Quincy Railroad
* Chicago Great Western Railway
* Chicago, Milwaukee, St. Paul & Pacific Railroad (Milwaukee Road)
* Chicago Transit Authority
* Chicago, South Shore & South Bend Railroad
* Chicago, Rock Island & Pacific Railroad
* Conrail
* CSX
* Cumbres & Toltee Scenic Railroad
* Delaware & Hudson Railway
* Denver & Pacific Railroad
* Denver & Rio Grande Railroad
* Denver & Rio Grande Western Railroad (D&RGW)
* Denver & Salt Lake Railroad
* Denver, Northwestern & Pacific Railroad
* Detroit, Toledo & Ironton Railroad
* Edaville Railroad
* Florida East Coast Railway
* Great Northern Railroad
* Illinois Central Gulf Railroad
* Katy
* Kansas City Southern Railway
* Long Island Rail Road
* Maine Central Railroad
* Manitou and Pike's Peak Railway
* Milwaukee Road
* Missouri Pacific Railroad
* Mount Washington Cog Railway
* New York Central Railroad
* New York, New Haven & Hartford Railroad
* New York & Atlantic Railway
* Norfolk Southern Railroad
* Northeast Illinois Regional Commuter Railroad
* Northern Pacific Railroad
* Pacific Electric Railway
* Penn Central Railroad
* Pennsylvania Railroad
* Reading Railroad
* Soo Line Railroad
* Southeastern Pennsylvania Transit Authority (SEPTA)
* Southern Pacific Railroad (SP)
* Union Pacific Railroad (UP)
* Washington Metropolitan Area Transit Authority (WMATA)
* Wabash Railroad
* Western Pacific Railroad
* Virginia Railway Express"

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