LocoData Abbreviations
- F -
| FACR | Falls Creek Railroad |
| FAIX | Fadal Associates Group |
| FAPR | Floydada & Plainview Railroad |
| FAWN | Fairmont & Western Railroad |
| FB | Fairhaven Branch Railroad |
| FBDC* | Ford County Historical Railroad Preservation Foundation |
| FBL | Federal Barge Lines |
| FC | Franklin & Carolina Railroad |
| FCA | Ferrocarril Andino (Argentina) |
| FCAB | Antofagasta & Boliva Railway (Chile) |
| FCACO | Ferrocarril Antioquia (Columbia) |
| FCalP | Ferrocarril al Pacifico (Costa Rica) |
| FCAN | Ferrocarril Argentino del Norte (Argentina) |
| FCAO | Ferrocarril del Astillero a Ontaneda (Spain) (Mexico) |
| FCC | Florence & Cripple Creek Railroad |
| FCCA | Ferrocarril Central Argentino (Central Argentina Rwy) |
| FCCBA | Ferrocarril Central de Buenos Aires (Argentina) |
| FCCC | Ferrocarril Cordoba Central (Argentina) |
| FCCCO | Ferrocarril Centrales (Columbia) |
| FCCcu | Ferrocarril de Cardenas (Cuba) |
| FCCJ | Cardenas & Jucaro Railroad (Cuba) |
| FCCN | Ferrocarril Central Norte (Argentina) |
| FCCNA | Ferrocarril Central Norte Argentino (Argentina) |
| FCCP | Ferrocarril Central del Paraguay (Paraguay) |
| FCCVC | Ferro-Carril Entre Cienfuegos y Villa-Clara (Cuba) |
| FCD | Ferrocarriles Dorado (Columbia) |
| FCdeCU | Ferrocarriles de Cuba (Cuba) |
| FCdelP | Ferrocarril Central Del Peru (Peru) |
| FCEN | Florida Central Railroad |
| FCER | Ferrocarril Entre Ríos (Argentina) |
| FCG | Fernwood, Columbia & Gulf Railroad |
| FCGB | Ferrocarril General Belgrano (Argentina) |
| FCGM | Ferrocarril General Mitre (Argentina) |
| FCGOA | Ferrocarril Gran Oeste Argentino (Argentina) |
| FCGR | Ferrocarril General Roca (Argentina) |
| FCHA | Ferrocarril de Huancayo a Ayacucho (Peru) |
| FCHG | Ferrocarril Havana-Güines (Cuba) |
| FCI | Ferrocarril Interoceanico (Mexico) |
| FCJcu | Ferrocarril de Jucaro (Cuba) |
| FCL | Ferrocarril de Langreo (Spain) |
| FCM | Ferrocarril Mexicano (Mexico) |
| FCMA | Fushun Coal Mining Administration (China) |
| FCMBA | Ferrocarril Midland de Buenos Aires (Argentina) |
| FCNEA | Ferrocarril Noreste Argentino (Argentina) |
| FCNG | Fulton County Narrow Gauge |
| FCNGU | Ferrocarril Nacional General Urquiza (Argentina) |
| FCO | Ferrocarril Oeste de Buenos Aires (Argentina) |
| FCOE | Farmers Co-Op Elevator |
| FCOS | Ferrocarril Oeste Santafecino (Argentina) |
| FCP | Ferrocarril del Pacifico Railroad (Mexico) |
| FCPCAL | Ferrocarril Presidente Carlos Antonio Lopez (Paraguay) |
| FCPCO | Ferrocarril Pacifico (Columbia) |
| FCPD | Ferrocarril Parral y Durango (Mexico) |
| FCRM | Ferrocarril del Rio Mayo (Mexico) |
| FCRR | Frankfort & Cincinnati |
| FCRYP | Ferrocarril Cananea, Rio Yaqui y Pacifico (Mexico) |
| FCS | Ferrocarrile del Sur (Peru) |
| FCSBA | Ferrocarril del Sud de Buenos Aires (Argentina) |
| FCSCO | Ferrocarril de le Sabana (Columbia) |
| FCVM | Ferrocarril del Valle de Mexico |
| FDDM | Fort Dodge, Des Moines & Southern Railway |
| FdeA | Ferrocarril de Antioquia (Columbia) |
| FdeCR | Ferrocarriles de Costa Rica (Costa Rica) |
| FdeG | Ferrocarril de Guatemala (Guatemala Railway) |
| FdelEA | Ferroviaria del Estado Argentina (Argentina) |
| FdelloS | Ferrovie dello Stato (Italy) |
| FdelloS | Ferrovie dello Stato (Italy) |
| FdelPNI | Ferrocarril del Pacifico (Nicaragua) |
| FdelS | Ferrocarrilles del Sureste (Mexico) |
| FE | Feliciana Eastern Railroad |
| FEC | Florida East Coast Railway |
| FEGU | Fernwood & Gulf |
| FEGUA | Ferrocarriles de Guatemala (Guatemala Railway) |
| FEL# | Feldbahn bns |
| FEMV | Fremont, Elkhorn & Missouri Valley |
| FEVE | Ferrocarriles Españoles de Vía Estrecha |
| FEVR | Fremont Elkhorn Valley Railroad |
| FFWW | Findlay, Fort Wayne & Western Rwy |
| FGBC | Ferrocarril de Guania a Barcelona (Columbia) |
| FGC | Ferrocarril Guatemala Central |
| FHPX | Fort Howard Paper Company |
| FICA | Ferrocarriles Internacionales de Centro America |
| FIM# | Florida Iron & Metals Co (scrapyard) |
| FISR | Finland State Railway |
| FIWE | Filmore Western Railroad |
| FIWO | Fitchburg & Worcester |
| FJG | Fonda, Johnstown & Gloversville Railroad |
| FLCN | Florida Construction Co |
| FLCP | Florida Central & Peninsular |
| FLSO | Florida Southern |
| FLWBS | French Lick West Braden & Southern |
| FM# | Faribanks-Morse bns |
| FM | Fairbanks-Morris |
| FMID | Florida Midland Railroad |
| FMRC | Farmrail Corporation |
| FMRR | Franklin & Megantic Railroad |
| FN | Franklin & Carolina Railroad |
| FNdeHN | Ferrocarril Nacional de Honduras (Honduras) |
| FNE | Fairfield & North East |
| FNM | Ferrocarriles Nacionales de Mexico (Mexico) |
| FNOR | Florida Northern Railroad |
| FNY | Freehold & New York Rwy |
| FOdeCU | Ferrocarilles Occedentales de Cuba (Cuba) |
| FORD* | Ford Motor Company |
| FOW# | Fowler bns |
| FP | Fordyce & Princeton Railroad |
| FPBZ | Ferrovia Paulista (Brazil) |
| FPC | ____ |
| FPE | Fairport, Painesville & Eastern Railroad |
| FPM | Flint & Pere Marquette |
| FR | Fall River Railroad |
| FRAB | Franklin & Abbeville |
| FRCH | Frederick & Charlevoix Railroad |
| FRN | Florida Rwy & Navigation Co |
| FRR | Fitchburg Railroad |
| FRRR | Friendship Railroad |
| FRW | Feather River & Western Railroad |
| FSRR | Fort Smith Railroad |
| FSSM | Ft Scott, Southeastern & Memphis |
| FSSRI | Fort Smith, Subiaco & Rock Island Railroad |
| FStPC | Foxburgh, St Petersburg & Clarion |
| FSUD | Fort Street Union Depot |
| FSW | Fort Smith & Western |
| FTP | Florida Transit & Peninsular Rwy |
| FTVM | Ferrocarril Terminal Valle de Mexico (Mexico) |
| FUS | Ferrocarriles Unidos del Sureste (Mexico) |
| FWB | Fort Worth Belt Railway |
| FWC | Fort Wayne & Chicago |
| FWCL | Fort Wayne, Cincinnati & Louisville |
| FWCR | Florida West Coast Railroad |
| FWD | Fort Worth & Denver Railroad |
| FWDC | Fort Worth & Denver City |
| FWJS | Fort Wayne, Jackson & Saginaw |
| FWRG | Fort Worth & Rio Grande |
| FWW | Fort Worth & Western Railroad |
| FWWR | Fort Worth & Western Railroad |
| FXE | Ferromex (Mexico) |
