| 1 | FGC | Departamento de Agricultura de La Generalitat de Cataluna | Callsign: Forestales, | E | AVCODES |
| 2 | FGC | Departmento De Agricultura De La Generalitat De Ca | | | ICAO1 |
| 3 | FGC | FLORIDA GULF COAST RAILROAD MUSEUM, INC. | | | PWRC |
| 4 | FGC | Ferrocarrils de la Generalitat de Catalunya | | E | TRAFFIC |
| 5 | FGC | FERROCARRILS DE LA GENERALITAT DE CATALUNYA | | ES | VKM |
| 6 | FGCA | Ferrovia Genova-Casella | Real: FGC | I | TRAFFIC |
| 7 | FGCH | FREIGHTCHASERS | | | SCAC4 |
| 8 | FGCI | FARRIS GRADING CO INC | | | SCAC3 |
| 9 | FGCN | FIGUERAS COMPANIA NAVIERA S A | | | SCAC3 |
| 10 | FGCN | FLAGSTAFF CONSTRUCTION | | | SCAC4 |
| 11 | FGCO | FURRY GRAIN CO DKB INC | | | SCAC3 |
| 12 | FGCO | FRYER TRUCKING | | | SCAC4 |
| 13 | FGCR | FREIGHTCENTRAL | | | SCAC4 |
| 14 | FGCS | FIRST GEORGIA CARRIERS INC | | | SCAC3 |
| 15 | FGCT | F & G CO OF TAMPA, PANAMA CITY FL | | | SCAC3 |
| 16 | FGCX | Florida Gulf Coast R.R. Museum, Inc. (passenger cars) | 1/1994-7/2005 (not listed) | | NAKINA |
| 17 | FGCX | Fruit Growers Express Co. | added 1/1961; 4/1961-1/1980; eliminated 10/1981; eliminated 1/1982 | | NAKINA |
| 18 | FGCX | Fuelgas Corp. | 1/1945-1/1950 | | NAKINA |
| 19 | FGCX | Fruit Growers Express Co. | 4/61-1/80; eliminated 10/81; eliminated 1/82 | | NRHS |
| 20 | FGCX | Florida Gulf Coast R.R. Museum, Inc. (passenger cars) | 1/94-7/2000 | | NRHS |
| 21 | FGCX | *FUELGAS CORP. | | | PWRC |
| 22 | FGCX | *FRUIT GROWERS EXPRESS CO. | | | PWRC |
| 23 | FGCX | +FLORIDA GULF COAST RAILROAD MUSEUM (PASSENGER CARS) | | | PWRC |
| 24 | FGCX | Florida Gulf Coast Railroad Museum | | | RSRV |
| 25 | FGCX | Fruit Growers Express Co. | | USA | TRAFFIC |
