User talk:NE2/US railroad list
- Holding companies
- American Railroads (1991-): Gulf, Colorado and San Saba Railway, Missouri and Valley Park Railroad, Southern California Railroad, Sweetwater Central Switching, Texas North Orient
- Delaware Otsego: Central New York Railroad, Cooperstown and Charlotte Valley Railway, Fonda, Johnstown and Gloversville Railroad, Lackawaxen and Stourbridge Railroad, New York, Susquehanna and Western Railroad, Toledo, Peoria and Western Railway (until 1999)
- Genesee Valley Transportation: Delaware-Lackawanna Railroad, Depew, Lancaster and Western Railroad, Genesee and Mohawk Valley Railroad, Lowville and Beaver River Railroad, Mohawk, Adirondack and Northern Railroad
- Genesee and Wyoming (1977-): Allegheny and Eastern Railroad, Buffalo and Pittsburgh Railroad, Dansville and Mount Morris Railroad, Genesee and Wyoming Railroad, Illinois and Midland Railroad, Louisiana and Delta Railroad, Portland and Western Railroad, Rochester and Southern Railroad
- Hohorst Transportation (1986-1995) (ex-Hohorst-Drunsic Transportation): Nashville and Eastern Railroad, Tennken Railroad, West Tennessee Railroad
- OmniTRAX (1994-): Central Kansas Railway, Chicago Rail Link, Chicago, West Pullman and Southern Railroad, Georgia Woodlands Railway, Great Western Railway of Colorado, Great Western Railway of Iowa, Great Western Railway of Oregon, Kansas Southwestern Railway, Manufacturers' Junction Railway, Newburgh and South Shore Railroad, Panhandle Northern Railroad
- ParkSierra (2000-2003): Arizona and California Railroad, California Northern Railroad
- Pioneer Railcorp (1988-): Alabama Railroad, Alabama and Florida Railway, Decatur Junction Railway, Fort Smith Railroad, Minnesota Central Railroad, Mississippi Central Railroad, Vandalia Railroad, West Michigan Railroad
- RailAmerica (1992-): Cascade and Columbia River Railroad, Dakota Rail, Delaware Valley Railway, Huron and Eastern Railroad, Minnesota Northern Railroad, Otter Tail Valley Railroad, Plainview Terminal, St. Croix Valley Railroad, Saginaw Valley Railway, South Central Tennessee Railroad, Ventura County Railroad, West Texas and Lubbock Railroad
- RailTex owned by RailAmerica from 2000
- Transtar: Bessemer and Lake Erie Railroad, Birmingham Southern Railroad, Duluth, Missabe and Iron Range Railway, Elgin, Joliet and Eastern Railway, Lake Terminal Railroad, McKeesport Connecting Railroad, Pittsburgh and Conneaut Dock, Union Railroad
- Watco Companies: Eastern Idaho Railroad, Kansas and Oklahoma Railroad, Palouse River and Coulee City Railroad, South Kansas and Oklahoma Railroad, Stillwater Central Railroad, Timber Rock Railroad