| 3201 | GLMJ | GLM TRANSPORT INC | | | SCAC4 |
| 3202 | GLML | GUROL, ISMAIL | | | SCAC4 |
| 3203 | GLMP | GLOBAL LOGISTIC MANAGEMENT CORPORAT | | | SCAC4 |
| 3204 | GLMU | GOODRICH LOGISTICS FZE | | UAE | BIC |
| 3205 | GLMV | GRAEBEL/LIGHTNING MOVERS INC | | | SCAC4 |
| 3206 | GLMW | GEROLD MOVING AND WAREHOUSING COMPANY | | | SCAC1 |
| 3207 | GLMX | Legault Metal, Inc. | added 1/2005; 7/2005; eliminated 4/2008 | | NAKINA |
| 3208 | GLMX | LEGAULT METAL, INC. | | | PWRC |
| 3209 | GLMX | LEGAULT METAL INC | | | SCAC4 |
| 3210 | GLMY | GEOLOGISTICS (MALAYSIA) SDN BHD | | | SCAC4 |
| 3211 | GLMZ | GLENMORE | | | PWRC |
| 3212 | GLN | Air Gulf Falcon PTY Ltd. | IATA: QL, Callsign: Gulfalcon, Ceased operations. Designator QL recalled by IATA | SD | AVCODES |
| 3213 | GLN | GCS Air Service | Callsign: Galion, | USA | AVCODES |
| 3214 | GLNB | G-LINE EXPRESS | | | SCAC4 |
| 3215 | GLND | GLENN DISTRIBUTOR INC | | | SCAC4 |
| 3216 | GLNF | GLENCAL FARMS | | | SCAC4 |
| 3217 | GLNI | GLT TRANSPORTATION INC | | | SCAC4 |
| 3218 | GLNJ | GOLD LION TRANSPORTATION LLC | | | SCAC4 |
| 3219 | GLNL | GLENN-LEE TRUCKING INC. | | | SCAC4 |
| 3220 | GLNO | GALLANO TRUCKING INC | | | SCAC4 |
| 3221 | GLNQ | GOLDLINE | | | SCAC4 |
| 3222 | GLNR | GILLSON TRUCKING MISSION (BC) LTD | | | SCAC4 |
| 3223 | GLNT | GLENDALE CARRIERS CORP | | | SCAC4 |
| 3224 | GLNU | Bechtel International | | | RSRV |
| 3225 | GLNX | GLNX Corp. | added 1/1981; 1/1994-7/2005 | | NAKINA |
| 3226 | GLNX | Glenco Transportation Services, Inc. | added 1/1976; 1/1980; eliminated 1/1981 | | NAKINA |
| 3227 | GLNX | Glenco Transportation Services, Inc. | 1/80; eliminated 1/81 | | NRHS |
| 3228 | GLNX | GLNX Corp. | added 1/81; 1/94-7/2000 | | NRHS |
| 3229 | GLNX | GLNX CORPORATION [GLENCO TRANSPORTATION SERVICES, INC.] | | | PWRC |
| 3230 | GLNX | GLNX Corporation | | | RSRV |
| 3231 | GLNX | GLNX CORPORATION | | | SCAC4 |
| 3232 | GLNY | GUILD LINES CORP | | | SCAC4 |
| 3233 | GLO | GOL Transportes Aeros Ltda. | IATA: G9, Callsign: Gol Transporte, IATA designator changed to G3 | BR | AVCODES |
| 3234 | GLO | GOL Linhas Aereas Inteligentes | IATA: G3, Callsign: Gol Transporte, IATA Prefix: 127, Merged into VRG Linhas Aereas S.A. w.e.f. 19 February 2009. IATA designator changed from G9* | BR | AVCODES |
| 3235 | GLO | Gol Transportes AA~©reos | IATA: G3 | | ICAO1 |
| 3236 | GLOA | GADSDEN LOGISTICS LLC | | | SCAC4 |
| 3237 | GLOBE | Globe Limo SA | City: Vernier | CH | TRAFFIC |
| 3238 | GLOC | GLOUCESTER DISPATCH INC | | | SCAC4 |
| 3239 | GLOE | GLOBAL PAPER | | | SCAC4 |
| 3240 | GLOG | GLOBETROTTER LOGISTICS INC | | | SCAC4 |
| 3241 | GLOG | Komunikacja Miejska Spółka z.o.o. w Głogowie | | PL | TRAFFIC |
| 3242 | GLOI | GILLOTA INC | | | SCAC4 |
| 3243 | GLOO | GEMCAP LOGISTICS | | | SCAC4 |
| 3244 | GLOQ | GOLDBERG, LORI | | | SCAC4 |
| 3245 | GLOU | GLOBAL OCEAN LINK LITHUANIA UAB | | LT | BIC |
| 3246 | GLOW | GLOTRANS INTERNATIONAL INC | | | SCAC4 |
| 3247 | GLOX | P.J. Glover | 1/1943-1/1946 | | NAKINA |
| 3248 | GLOX | Great Lakes Oil Refining Co., Ltd. | 8/1920 | | NAKINA |
| 3249 | GLOX | *GREAT LAKES OIL REFINING CO., LTD. | | | PWRC |
| 3250 | GLOX | *P.J. GLOVER | | | PWRC |
| 3251 | GLOX | +GOODLOE LEASING | | | PWRC |
| 3252 | GLOX | GOODLOE LEASING | | | SCAC4 |
| 3253 | GLP | Globus LLC | IATA: GH, Callsign: Globus, IATA Prefix: 674, Merged into S7 Airlines during December 2019. IATA designator changed from GB* | RUS | AVCODES |
| 3254 | GLPA | GILLES PERREAULT TRANSPORT INC | | | SCAC4 |
| 3255 | GLPB | GREAT LAKES PETROLEUM TRANSPORTATIO | | | SCAC4 |
| 3256 | GLPE | GOLDEN PYRAMID ENTERPRISES, INC | | | SCAC1 |
| 3257 | GLPE | GOLDEN PYRAMID ENTERPRISES INC | | | SCAC4 |
| 3258 | GLPL | GLACIAL PLAINS COOPERATIVE | | | SCAC4 |
| 3259 | GLPN | GOULART PETROLEUM INC | | | SCAC4 |
| 3260 | GLPS | GENERAL PORT SERVICES LLC | | | SCAC4 |
| 3261 | GLPU | LLC PROLEASINGGROUP | | RUS | BIC |
| 3262 | GLPU | PROLEASINGGROUP LTD (ZAO) | | | SCAC4 |
| 3263 | GLPX | Falley Corp. | added 4/1969; eliminated 7/1969; 4/1970 | | NAKINA |
| 3264 | GLPX | Falley Petroleum Co. | added 1/1969; eliminated 4/1969 | | NAKINA |
| 3265 | GLPX | Great Lakes Propane Co. | added 7/1966; 10/1966; eliminated 1/1969 | | NAKINA |
| 3266 | GLPX | Great Lakes Propane Co. | added 7/66; 10/66; eliminated 1/69 | | NRHS |
| 3267 | GLPX | Falley Petroleum Co. | added 1/69; eliminated 4/69 | | NRHS |
| 3268 | GLPX | Falley Corp. | added 4/69; eliminated 7/69; 4/70 | | NRHS |
| 3269 | GLPX | FALLEY CORP. [FALLEY PETROLEUM CO.; GREAT LAKES PROPANE CO.] | | | PWRC |
| 3270 | GLPZ | GOLDEN PUMP | | | PWRC |
| 3271 | GLQ | El Quilada International Aviation Co. Ltd. | Callsign: Quilada, | SUD | AVCODES |
| 3272 | GLQ | El Quilada International Aviation | | | ICAO1 |
| 3273 | GLQI | GLT | | | SCAC4 |
| 3274 | GLQL | GLOBAL CONTAINERLINES | | | SCAC1 |
| 3275 | GLQN | GLENN OIL COMPANY LLC | | | SCAC4 |
| 3276 | GLQS | GEAR LOGISTICS LLC | | | SCAC4 |
| 3277 | GLQT | GAGGETTA LIQUID TRANSFER | | | SCAC4 |
| 3278 | GLQU | GLOBAL EQUIPMENT LOGISTICS LTD | | GB | BIC |
| 3279 | GLQU | GLOBAL EQUIPMENT LOGISTICS LIMITED | | | SCAC4 |
| 3280 | GLR | Central Mountain Air Ltd. | IATA: 9M, Callsign: Glacier, IATA Prefix: 634, Formerly Central Mountain Air Services Ltd. | CDN | AVCODES |
| 3281 | GLR | Central Mountain Air | | | ICAO1 |
| 3282 | GLRA | GOLDER ASSOCIATES LTD | | | SCAC4 |
| 3283 | GLRE | G & L BROKERS | | | SCAC4 |
| 3284 | GLRF | GLADIEUX TRADING & MARKETING CO LP | | | SCAC4 |
| 3285 | GLRG | GOODLUCK REFRIGERATION SERVICE INC | | | SCAC4 |
| 3286 | GLRP | GLASROCK PRODUCTS INC | | | SCAC4 |
| 3287 | GLRQ | G T L R INC | | | SCAC4 |
| 3288 | GLRR | Gerhard Lang GmbH & Co. KG | | DE | VKM |
| 3289 | GLRU | LLC EAST GLOBAL LOGISTICS | | RUS | BIC |
| 3290 | GLRV | GLAMOUR MOVING COMPANY | | | SCAC4 |
| 3291 | GLRX | Georgetown Loop R.R., Inc. | 7/2000-7/2005 (not listed) | | NAKINA |
| 3292 | GLRX | Georgetown Loop R.R., Inc. | Jul-00 | | NRHS |
| 3293 | GLRX | GEORGETOWN LOOP RAILROAD | | | PWRC |
| 3294 | GLRX | Georgetown Loop Railroad | | | RSRV |
| 3295 | GLRX | GEORGETOWN LOOP RAILROAD INC | | | SCAC4 |
| 3296 | GLRY | GUILLORY PETROLEUM TRANSPORT LLC | | | SCAC4 |
| 3297 | GLS | Galaircervis | Callsign: Gals, | UA | AVCODES |
| 3298 | GLS | Galaircervis | | | ICAO1 |
| 3299 | GLS | GREAT LAKES STEEL | | | PWRC |
| 3300 | GLS | GRAY LINE OF SEATTLE | | | SCAC4 |
