Airlines — G
- GGEGobierno De Guinea Ecuatorial
- GODGoDutch
- GOFGof-Air
- GOIGofir
- GJSGoJet Airlines
- GLOGol Transportes Aéreos
- GBTGold Belt Air Transport
- GDAGoldAir
- GDKGoldeck-Flug
- GAOGolden Air
- GDDGolden Airlines
- SAJGolden Eagle Air Services (FAA)
- GMRGolden Myanmar Airlines
- GPAGolden Pacific Airlines
- GRSGolden Rule Airlines
- GLDGolden Star Air Cargo
- GOSGoldfields Air Services
- GAQGolfe Air Quebec
- GLEGoliaf Air
- GOMGomel Airlines
- RDRGoodridge (UK) Limited
- IKAGorkha Airlines
- GORGorlitsa Airlines
- HKGGovernment Flying Service
- GRZGovernment of Zambia Communications Flight
- GPEGP Express Airlines
- GPRGPM Aeroservicio
- GIBGR-Avia
- HLDGrampian Flight Centre
- GAVGranada Aviacion
- GAEGrand Aire Express
- GNDGrand Airways
- CVUGrand Canyon Airlines
- GDCGrand China Air
- GCAGrand Cru Airlines
- GUNGrant Aviation
- LMKGrantex Aviation
- GRAGreat American Airways
- GLAGreat Lakes Airlines
- GLUGreat Lakes Airways (Uganda)
- GRPGreat Plains Airlines
- GWLGreat Wall Airlines
- GWAGreat Western Air
- HNAGreek Navy
- GFYGreenfly
- GFFGriffin Aviation
- GXAGrixona
- GZDGrizodubova Air Company
- HTGGrossmann Air Service
- GSJGrossmann Jet Service
- GHVGround Handling Service de Mexico
- GPMGrup Air-Med
- EJCGrupo De Aviacion Ejecutiva
- TATGrupo TACA
- VMMGrupo Vuelos Mediterraneo
- GMTGrupoaereo Monterrey
- BMKGST Aero Aircompany
- GTXGTA Air
- GSYGuard Systems
- BSRGuine Bissaur Airlines
- GIJGuinea Airways
- GNCGuinea Cargo
- GEAGuinea Ecuatorial Airlines
- GIFGuinee Airlines
- GIQGuinee Paramount Airlines
- CGHGuizhou Airlines
- GUSGuja
- GUJGujarat Airways
- TSUGulf & Caribbean Cargo / Contract Air Cargo
- GUFGulf African Airlines - Gambia
- GFAGulf Air
- GBAGulf Air Bahrain
- GATGulf Air Inc
- GCNGulf Central Airlines
- SFYGulf Flite Center
- GPCGulf Pearl Air Lines
- GLFGulfstream Aerospace
- GFSGulfstream Airlines
- GFTGulfstream International Airlines
- GU1Gulisano airways
- GULGull Air
- GUMGum Air
- GDHGuneydogu Havacilik Isletmesi
- GWNGwyn Aviation
- CBGGX Airlines