| 1 | GN | Air Gabon | ICAO: AGN, Callsign: Golf November, IATA Prefix: 185, Ceased operations 2006. Designator GN recalled by IATA | G | AVCODES |
| 2 | GN | BNSF Ry. Co. | added 4/2005; 7/2005 | | NAKINA |
| 3 | GN | Burlington Northern Santa Fe Ry. Co. | 7/2000; eliminated 4/2005 | | NAKINA |
| 4 | GN | Burlington Northern R.R. Co. | added 7/1981; 1/1994 | | NAKINA |
| 5 | GN | Burlington Northern Inc. | 1/1975-1/1980; eliminated 7/1981 | | NAKINA |
| 6 | GN | Great Northern Ry., Co. | 7/1923-10/1966 | | NAKINA |
| 7 | GN | Great Northern Ry., Co. | 4/38-10/66 | | NRHS |
| 8 | GN | Burlington Northern Inc. | 1/75-1/80; eliminated 7/81 | | NRHS |
| 9 | GN | Burlington Northern R.R. Co. | added 7/81; 1/94 | | NRHS |
| 10 | GN | Burlington Northern Santa Fe Ry. Co. | Jul-00 | | NRHS |
| 11 | GN | BURLINGTON NORTHERN AND SANTA FE RAILWAY (BNSF) [BURLINGTON NORTHERN RR; GREAT NORTHERN] | | | PWRC |
| 12 | GN | Great Northern Railway (BNSF Railway) | | | RSRV |
| 13 | GN | Great Northern | | USA | TRAFFIC |
| 14 | GNA | Servicios Aereos Gana, S.A. de C.V. | Callsign: Servigana, | MEX | AVCODES |
| 15 | GNA | Servicios Aereos Gana | | | ICAO1 |
| 16 | GNA | Kansas City Southern Ry. Co. | added 10/1993; 1/1994-7/2005 | | NAKINA |
| 17 | GNA | Graysonia, Nashville & Ashdown R.R. Co. | 1/1975-1/1980; added 4/1980; eliminated 10/1993 | | NAKINA |
| 18 | GNA | Graysonia, Nashville & Ashdown R.R. Co. | 1/75-1/80; added 4/80; eliminated 10/93 | | NRHS |
| 19 | GNA | Kansas City Southern Ry. Co. | added 10/93; 1/94-7/2000 | | NRHS |
| 20 | GNA | KANSAS CITY SOUTHERN RAILWAY [GRAYSONIA, NASHVILLE & ASHDOWN RR.] | | | PWRC |
| 21 | GNA | Graysonia, Nashville and Ashdown Railroad (Kansas City Southern Railway) | | | RSRV |
| 22 | GNAA | G & N TRUCKING | | | SCAC4 |
| 23 | GNAB | GOOD NEWS TRUCKING CORPORATION | | | SCAC4 |
| 24 | GNAE | GROUPE NADEAU | | | SCAC4 |
| 25 | GNAG | GNAGEY GAS & OIL | | | SCAC4 |
| 26 | GNAK | GENCO TRANSPORTATION MANAGEMENT LLC | | | SCAC4 |
| 27 | GNAQ | GODDARD TRUCKING | | | SCAC4 |
| 28 | GNAR | GALLEA TRANSFER & STORAGE INC | | | SCAC4 |
| 29 | GNAS | GODFREY TRUCKING | | | SCAC4 |
| 30 | GNAX | Holcim (US), Inc. | added 7/2002; 7/2005 | | NAKINA |
| 31 | GNAX | Holnam, Inc. | added 7/1991; 1/1994-7/2000; eliminated 7/2002 | | NAKINA |
| 32 | GNAX | Gloucester N.A., Inc. | added 1/1985; eliminated 10/1987 | | NAKINA |
| 33 | GNAX | Gloucester N.A., Inc. | added 1/85; eliminated 10/87 | | NRHS |
| 34 | GNAX | Holnam, Inc. | added 7/91; 1/94-7/2000 | | NRHS |
| 35 | GNAX | *GLOUCHESTER N.A. INC. | | | PWRC |
| 36 | GNAX | +HOLCIM (US), INC. [HOLNAM, INC.] | | | PWRC |
| 37 | GNAX | Holnam | | | RSRV |
| 38 | GNAX | HOLCIM (US) INC | | | SCAC4 |
| 39 | GNB | Global Air Link | Callsign: Global AirlinK, | WAN | AVCODES |
| 40 | GNBC | Grainbelt Corp. | added 4/1988; 1/1994-7/2005 | | NAKINA |
| 41 | GNBC | Grainbelt Corp. | added 4/88; 1/94-7/2000 | | NRHS |
| 42 | GNBC | GRAINBELT CORPORATION (FARMRAIL) | | | PWRC |
| 43 | GNBC | Grainbelt Corporation (Farmrail) | | | RSRV |
| 44 | GNBC | GRAINBELT CORPORATION | | | SCAC4 |
| 45 | GNBE | GONZALEZ TRUCKING | | | SCAC4 |
| 46 | GNBH | GREENBUSH SERVICE CO | | | SCAC4 |
| 47 | GNBI | GRAYMONT (NB) INC | | | SCAC4 |
| 48 | GNBO | GONZALEZ BRAVO, FRANCISCO | | | SCAC4 |
| 49 | GNBQ | GANDIN BROS INC | | | SCAC4 |
| 50 | GNC | Guinea Cargo | Callsign: Guinea Cargo, | GQ | AVCODES |
| 51 | GNC | Guinea Cargo | | | ICAO1 |
| 52 | GNCC | GLANBIA NUTRITIONALS CANADA INC | | | SCAC4 |
| 53 | GNCH | GARDEN WHOLESALE INC | | | SCAC4 |
| 54 | GNCJ | GEORGE N CRAIGS AUTO TRANSPORT | | | SCAC4 |
| 55 | GNCL | GULF STOLT SHIP MANAGEMENT JLT | | | SCAC4 |
| 56 | GNCM | GRAEBEL/NORTH CAROLINA MOVERS INC ( | | | SCAC4 |
| 57 | GNCO | GENCO LOGISTICS LTD | | | SCAC4 |
| 58 | GNCP | G & C CARTAGE COMPANY INCORPORATED | | | SCAC4 |
| 59 | GNCQ | GENESCO INC | | | SCAC4 |
| 60 | GNCR | GREEN, C H FUEL TRANSPORT | | | SCAC4 |
| 61 | GNCS | GRANICOS ENE | | | SCAC4 |
| 62 | GNCU | NIPPON CONCEPT CORPORATION | | J | BIC |
| 63 | GNCU | GALLATIN NATIONAL COMPANY | | | PWRC |
| 64 | GNCU | Gallatin National | | | RSRV |
| 65 | GNCV | GATEWAY NATIONAL CARRIERS LLC | | | SCAC4 |
| 66 | GNCW | GREEN, CLINTON W INC | | | SCAC4 |
| 67 | GND | Grand Airways Inc. | Callsign: Grand Vegas, | USA | AVCODES |
| 68 | GND | Grand Airways | | | ICAO1 |
| 69 | GNDC | GENERAL DIE & ENGINEERING INC | | | SCAC4 |
| 70 | GNDL | GONDEL TRANSPORT INC | | | SCAC4 |
| 71 | GNDP | G & D TRANSPORTATION | | | SCAC4 |
| 72 | GNDQ | G & D TRUCKING INC | | | SCAC4 |
| 73 | GNDR | GUNDERSON TRUCKING INC | | | SCAC4 |
| 74 | GNDS | GENDERS, GREGORY | | | SCAC4 |
| 75 | GNDX | TTX Co. | added 1/2005; 7/2005 | | NAKINA |
| 76 | GNDX | TTX CO. | | | PWRC |
| 77 | GNDX | TTX COMPANY | | | SCAC4 |
| 78 | GNEE | GNX INC | | | SCAC4 |
| 79 | GNEG | GENESUS INC | | | SCAC4 |
| 80 | GNER | Great North Eastern Railway Ltd. | 1999: 1472km standard gauge, electrified at 25kV 50Hz. Great North Eastern Railway (GNER) is a British train operating company, owned by Sea Containers Ltd. They operate high-speed express train services on the East Coast Main Line. Most of their trains run between London King's Cross and either Edinburgh Waverley or Leeds. | GB | TRAFFIC |
| 81 | GNER | Great North Eastern Railway | | UK | VKM |
| 82 | GNET | GENERAL TRANSPORTATION | | | SCAC4 |
| 83 | GNF | Gandalf Airlines S.p.A. | IATA: G7, Callsign: Gandalf, | I | AVCODES |
| 84 | GNF | Green Flag Aviation Co. Ltd. | Callsign: Green Flag, | SUD | AVCODES |
| 85 | GNF | | IATA: G7 | | ICAO1 |
| 86 | GNF | Gandalf Airlines | | I | TRAFFIC |
| 87 | GNFC | GOOD & FAIR CARTING & MOVING CO INC | | | SCAC4 |
| 88 | GNFF | GENFOOT INC | | | SCAC4 |
| 89 | GNFI | GENFREIGHT INC | | | SCAC4 |
| 90 | GNFL | GREENLEAF LOGISTICS LLC | | | SCAC4 |
| 91 | GNFP | G N F INCORPORATED | | | SCAC4 |
| 92 | GNFR | GONYEA, FRANCIS E | | | SCAC4 |
| 93 | GNFU | GLOBAL NUCLEAR FUELS | | USA | BIC |
| 94 | GNFU | Global Nuclear Fuels | | | RSRV |
| 95 | GNFU | GLOBAL NUCLEAR FUELS | | | SCAC4 |
| 96 | GNFX | City of Gainesville, Florida | added 4/1981; 1/1994-7/2005 | | NAKINA |
| 97 | GNFX | City of Gainesville, Florida | added 4/81; 1/94-7/2000 | | NRHS |
| 98 | GNFX | CITY OF GAINESVILLE, FLORIDA | | | PWRC |
| 99 | GNFX | City of Gainesville, Florida | | | RSRV |
| 100 | GNFX | CITY OF GAINESVILLE,FL. | | | SCAC4 |
