| Name |
Mark |
Region |
Holding Date |
Notes |
| Alabama and Gulf Coast Railway | AGR | | | |
| Aliquippa and Ohio River Railroad | AOR | | Acquired - 2008[1] | |
| Allegheny and Eastern Railroad | ALY | | Acquired - 1992 | |
| AN Railway | AN | | | |
| Arizona and California Railroad | ARZC | | | |
| Arizona Eastern Railway | AZER | | Acquired - 2011[2] | |
| Arkansas, Louisiana and Mississippi Railroad | ALM | | Acquired - 2003[3] | |
| Arkansas Midland Railroad | AKMD | | | |
| Atlantic and Western Railway | ATW | | Acquired - 2005[4] | |
| Bauxite and Northern Railway | BXN | | | |
| Bay Line Railroad | BAYL | | Acquired - 2005[4] | |
| Buffalo and Pittsburgh Railroad | BPRR | | ? - 1988 | |
| California Northern Railroad | CFNR | | | |
| Cape Breton and Central Nova Scotia Railway | CBNS | Canada | Acquired - 2012 | Part of RailAmerica purchase. |
| Carolina Piedmont Railroad | CPDR | | | |
| Cascade and Columbia River Railroad | CSCD | | | |
| Central Oregon and Pacific Railroad | | | Acquired - 2012 | Part of RailAmerica purchase. |
| Central Railroad of Indiana | | | | |
| Central Railroad of Indianapolis | | | | |
| Chattahoochee Bay Railroad | | | ? - 2006[5] | |
| Chattahoochee Industrial Railroad | | | ? - 2003[6] | |
| Chattooga and Chickamauga Railway | | | ? - 2008[7] | |
| Chesapeake and Albemarle Railroad | | | | |
| Chicago, Fort Wayne and Eastern Railroad | | | Acquired - 2012 | Part of RailAmerica purchase. |
| Columbus and Chattahoochee Railroad | CCH | | Acquired - 2012 | |
| Columbus and Greenville Railway | | | ? - 2008[7] | |
| Columbus and Ohio River Railroad | | | Acquired - 2008[1] | |
| Commonwealth Railway | | | Acquired - 1996[8] | |
| Conecuh Valley Railroad | | | | |
| Connecticut Southern Railroad | | | | |
| Corpus Christi Terminal Railroad | | | Acquired - 1997[9] | |
| Dallas, Garland and Northeastern Railroad | | | | |
| Dansville and Mount Morris Railroad | | | ? - 1985 | |
| East Tennessee Railway | | | Acquired - 2005[4] | |
| Eastern Alabama Railway | | | | |
| First Coast Railroad | | | ? - 2005[10] | |
| Fordyce and Princeton Railroad | | | Acquired - 2003[3] | |
| Galveston Railroad | | | Acquired - 2005[4] | |
| Genesee and Wyoming Railroad | | | 1977 | |
| Genesee & Wyoming Australia | | | Acquired - 2006 | |
| Georgia Central Railway | | | Acquired - 2005[4] | |
| Georgia Southwestern Railroad | | | ? - 2008[11] | |
| Goderich–Exeter Railway | GEXR | Canada | Acquired - 2012 | Part of RailAmerica purchase. |
| Golden Isles Terminal Railroad | | | Acquired - 1998[12] | |
| Grand Rapids Eastern Railroad | | | | |
| Hilton and Albany Railroad | | | |
| Huron and Eastern Railway | | | | |
| Huron Central Railway | HCRY | Canada | Acquired - 1997 | |
| Illinois and Midland Railroad | | | Acquired - 1996[13] | |
| Indiana and Ohio Railway | | | | |
| Indiana Southern Railroad | | | | |
| Kentucky West Tennessee Railway | | | Acquired - 2005[4] | |
| Kiamichi Railroad | | | | |
| Knob Lake and Timmins Railway | KLT | Canada | | |
| Kyle Railroad | | | | |
| Little Rock and Western Railway | | | Acquired - 2005[4] | |
| Louisiana and Delta Railroad | | | Acquired - 1987 | |
| Luxapalila Valley Railroad | | | Acquired - 2008[7] | |
| Mahoning Valley Railway | | | Acquired - 2008[1] | |
| Marquette Rail | | | | |
| Maryland Midland Railway | | | Acquired - 2007[14] | |
| Massena Terminal Railroad | | | | |
| Meridian and Bigbee Railroad | | | Acquired - 2005[4] | |
| Michigan Shore Railroad | | | | |
| Mid-Michigan Railroad | | | | |
| Missouri and Northern Arkansas Railroad | | | | |
| New England Central Railroad | | | | |
| North Carolina and Virginia Railroad | | | | |
| Ohio Central Railroad System | | | Acquired - 2008[1] | |
| Ohio & Pennsylvania Railroad | | | Acquired - 2008[1] | |
| Ohio Southern Railroad | | | Acquired - 2008[1] | |
| Olympia and Belmore Railroad | OYLO | | 2016– |
| Ottawa Valley Railway | OVR | Canada | Acquired - 2012 | Part of RailAmerica purchase. |
| Otter Tail Valley Railroad | | | Acquired - 2012 | Part of RailAmerica purchase. |
| Pittsburgh and Ohio Central Railroad | | | Acquired - 2008[1] | |
| Pittsburg and Shawmut Railroad | | | Acquired - 1996[15] | |
| Point Comfort and Northern Railway | | | | |
| Portland and Western Railroad | | | Acquired - 1995 | |
| Prescott and Northwestern Railroad | | | | |
| Puget Sound and Pacific Railroad | | | | |
| Quebec Gatineau Railway | QGRY | Canada | Acquired - 1997 | Lessee of Mirabel Railway |
| Rapid City, Pierre and Eastern Railroad | | | Acquired - 2014[16][17] | Purchased for $210 million from Canadian Pacific Railway.[18] |
| Riceboro Southern Railway | | | Acquired - 2005[4] | |
| Rochester and Southern Railroad | | | ? - 1986 | |
| Rockdale, Sandow and Southern Railroad | | | | |
| St. Lawrence and Atlantic Railroad (Canada) | SLQ | Canada | 2002[19] | |
| St. Lawrence and Atlantic Railroad (US) | SLR | Northeast | 2002[19] | |
| Salt Lake City Southern Railroad | | | Acquired - 2002[20] | |
| San Diego and Imperial Valley Railroad | | | Acquired - 2012 | Part of RailAmerica purchase. |
| San Joaquin Valley Railroad | | | | |
| Savannah Port Terminal Railroad | | | Acquired - 1998[12] | |
| South Buffalo Railway | | | Acquired - 2001[21] | |
| South Carolina Central Railroad | | | | |
| Southern Ontario Railway | SOR | Canada | | |
| Talleyrand Terminal Railroad | | | Acquired - 1996[8] | |
| Tazewell and Peoria Railroad | | | Acquired - 2004[22] | Lessee of Peoria and Pekin Union Railway |
| Texas Northeastern Railroad | | | | |
| Three Notch Railroad | | | | |
| Toledo, Peoria and Western Railway | | | | |
| Tomahawk Railway | | | Acquired - 2005[4] | |
| Utah Railway | | | Acquired - 2002[20] | |
| Valdosta Railway | | | Acquired - 2005[4] | |
| Ventura County Railroad | | | | |
| Warren and Saline River Railroad | | | | |
| Warren and Trumbull Railroad | | | Acquired - 2008[1] | |
| Wellsboro and Corning Railroad | | | | |
| Western Kentucky Railway | | | Acquired - 2005[4] | |
| Western Labrador Rail Services | WLRS | Canada | Created - 2010[23] | |
| Willamette and Pacific Railroad | | | Leased - 1993 | 20 year lease from Southern Pacific. |
| Wilmington Terminal Railroad | | | | |
| Wiregrass Central Railroad | | | | |
| York Railway | | | Acquired - 2002[19] | |
| Youngstown and Austintown Railroad | | | Acquired - 2008[1] | |
| Youngstown Belt Railroad | YB | | Acquired - 2008[1] | |