| 1 | GFR | Avia-Pusk | Callsign: Apusk, | KZ | AVCODES |
| 2 | GFR | Grand Forks Ry. Co. | 1/1994-7/2005 | | NAKINA |
| 3 | GFR | Grand Forks Ry. Co. | 1/94-7/2000 | | NRHS |
| 4 | GFR | GRAND FORKS RAILWAY COMPANY | | | PWRC |
| 5 | GFR | Grand Forks Railway | | | RSRV |
| 6 | GFR | GRAND FORKS RAILWAY COMPANY | | | SCAC4 |
| 7 | GFR | Grup Feroviar Roman | | RO | TRAFFIC |
| 8 | GFR | GRUP FEROVIAR ROMAN S.A. | | RO | VKM |
| 9 | GFRD | GERMAN FEDERAL RAILROAD | | | SCAC4 |
| 10 | GFRG | GOLD FREIGHT | | | SCAC4 |
| 11 | GFRJ | GUERRA, FRANCISCO J CHB | | | SCAC4 |
| 12 | GFRK | GF TRUCKING | | | SCAC4 |
| 13 | GFRM | GLOBAL FR8 MANAGEMENT INC | | | SCAC4 |
| 14 | GFRP | GRIFFIN, RIP TRUCK SERVICE CENTER I | | | SCAC4 |
| 15 | GFRQ | GENERAL FREIGHT INC | | | SCAC4 |
| 16 | GFRR | Georgia & Florida RailNet Inc. | added 7/1999; 7/2000-7/2005 | | NAKINA |
| 17 | GFRR | Georgia & Florida R.R. Co., Inc. | eliminated 7/1999 | | NAKINA |
| 18 | GFRR | Georgia & Florida R.R. Co., Inc. | eliminated 7/99 | | NRHS |
| 19 | GFRR | Georgia & Florida Railnet Inc. | added 7/99; 7/2000 | | NRHS |
| 20 | GFRR | GEORGIA & FLORIDA RAILNET (GEORGIA & FLORIDA RAILROAD CO.) | | | PWRC |
| 21 | GFRR | Georgia and Florida Railroad | | | RSRV |
| 22 | GFRR | GEORGIA & FLORIDA RAILNET INC | | | SCAC4 |
| 23 | GFRR | Georgia & Florida | | USA | TRAFFIC |
| 24 | GFRT | GUARANTEED FREIGHT SYSTEMS INC | | | SCAC4 |
| 25 | GFRU | COSIARMA SPA | | I | BIC |
| 26 | GFRU | CALA CONTAINERS SHIPPING SPA | | | SCAC4 |
| 27 | GFRX | Western Refrigerator Line Co. | eliminated 10/1981; eliminated 1/1982 | | NAKINA |
| 28 | GFRX | Western Refrigerator Line Co. Terminal | added 1/1973; 1/1975-1/1980 | | NAKINA |
| 29 | GFRX | Western Refrigerator Line Co. | added 1/1960; 4/1961-4/1970; eliminated 1/1973 | | NAKINA |
| 30 | GFRX | Western Refrigerator Line Co. | added 1/60; 4/61-4/70 | | NRHS |
| 31 | GFRX | Western Refrigerator Line Co. Terminal | 1/75-1/80 | | NRHS |
| 32 | GFRX | Western Refrigerator Line Co. | eliminated 10/81; eliminated 1/82 | | NRHS |
| 33 | GFRX | WESTERN REFRIGERATOR LINE | | | PWRC |
| 34 | GFRX | WESTERN REFRIGERATOR LINE CO | | | SCAC3 |
| 35 | GFRY | GROFF PETROLEUM CARRIERS | | | SCAC4 |
