- Statistics:
- Total distance: 150,000 miles or 240,000km
- Standard gauge: 4'8½" or 1.435m
- Only Amtrak is federally-owned
- Lines mostly or entirely in the U.S.
- Alaska Railroad [1]
- Amtrak [1]
- Atchison, Topeka & Santa Fe Railroad (ATSF or AT&SF)
- Atlanta & Knoxville Railroad
- Atlanta & West Point Railroad
- Atlantic Coast Line (ACL)
- Autotrain Corporation
- Bay Area Rapid Transit (BART) [1]
- Baltimore and Ohio Railroad (B&O)
- Blue Ridge Scenic Railway (BRSR) [1]
- Boston & Maine Corporation (B&M)
- Brooklyn-Manhattan Transit (BMT, now NYC's MTA) [1]
- Burlington Northern Railroad (BN)
- Burlington Northern Santa Fe Railway (BNSF, formerly BN and ATSF) [1]
- Central of Georgia (C of G) [1]
- Central Pacific Railroad (CP)
- Central Railroad of New Jersey
- Chesapeake & Ohio Railroad (C&O, later Chessie System with B&O)
- Chicago, Burlington and Quincy Railroad (Burlington Route)
- Chicago & Eastern Illinois (C&EI)
- Chicago Great Western Railway
- Chicago, Milwaukee, St. Paul & Pacific Railroad ("Milwaukee Road")
- Chicago & Northwestern Railway (CNW or C&NW)
- Chicago, Rock Island & Pacific Railroad (Rock Island, or RI)
- Chicago, South Shore & South Bend Railroad [1]
- Chicago Transit Authority (CTA) [1]
- CONRAIL (now under CSX and NS) [1]
- CSX (Chessie, Seaboard, Etcetera) [1]
- Cumbres & Toltec Scenic Railroad
- Delaware & Hudson Railway
- Delaware, Lackawanna & Western Railroad (Lackawanna)
- Denver & Rio Grande Railroad (DRG or D&RG)
- Denver & Rio Grande Western Railroad (DRGW or D&RGW)
- Detroit, Toledo & Ironton Railroad
- Eastern Tennessee & Western North Carolina Railroad (ET&WNC, or "Tweetsie") [1]
- Edaville Railroad
- Erie Railroad
- Erie Lackawanna Railroad
- Florida East Coast Railway (FEC) [1]
- Galena & Chicago Union Railroad
- Georgia Northeastern Railroad (GNRR) [1]
- Great Northern Railroad (GN)
- Gulf, Mobile & Ohio Railroad (GM&O)
- Illinois Central Railroad
- Independent Subway (IND, now NYC's MTA) [1]
- Interborough Rapid Transit (IRT, now NYC's MTA) [1]
- Kansas City Southern Railway (KCS)
- Lehigh & Hudson River Railway
- Lehigh Valley Railroad (LV)
- Long Island Rail Road (LIRR) [1]
- Louisville & Nashville (L&N)
- Maine Central Railroad
- Manitou and Pike's Peak Railway
- Marietta & North Georgia Railroad
- Massachusetts Bay Transit Authority (MBTA) [1]
- Metropolitan Atlanta Rapid Transit Authority (MARTA) [1]
- Missouri Pacific Railroad
- Monongahela Connecting Railroad
- Mount Washington Cog Railway
- Napa Valley Wine Train [1]
- Nashville, Chattanooga & St. Louis Railroad
- New York Central Railroad (NYC)
- New York, New Haven & Hartford Railroad
- Norfolk Southern Railroad' (NS, formerly N&W and Southern) [1]
- Northeast Illinois Regional Commuter Railroad Corporation (Metra) [1]
- Northern Pacific Railroad (NP)
- Penn Central Railroad (PC)
- Pennsylvania-Reading Seashore Lines (PRSL) (joint venture of Pennsylvania Railroad and Reading Railroad)
- Pennsylvania Railroad (PRR, nicknamed "Pennsy")
- Reading Railroad (pronounced "Redding")
- Richmond, Fredericksburg & Potomac Railroad (RF&P)
- Rutland Railroad
- Seaboard Air Line (SAL)
- Seaboard Coast Line (SCL)
- Soo Line Railroad (SOO)
- Southern Pacific Railroad (SP)
- Southern Railway (Southern, later NS with N&W)
- Union Pacific Railroad (UP, oldest in the U.S) [1]
- Tennessee Valley Railroad [1]
- Virginia & Truckee Railroad (V&T) [1]
- Wabash Railroad (WAB, later merged into Norfolk & Western which is now part of Norfolk Southern)
- Western & Atlantic Railroad (W&A)
- Western Pacific Railroad (WP)
- White Pass and Yukon Route (WP&Y)
- Winter Park Ski Train [1]
- Canadian railroads that operate in the U.S.
- Mexican railroads that operate in the U.S.
- Ferrocarriles Nacionales de Mexico (N de M) [español] [translate]
- Ferrocarriles Nacionales de Mexico (N de M) [español] [translate]
See also Transportation in the United States.
