Airlines — G
- GMLG & L Aviation
- EXHG5 Executive
- GAHGa-Ma Helicoptere
- GBKGabon Airlines
- GBEGabon Express
- GRTGabon-Air-Transport
- GIGGacela Air Cargo
- GDRGadair European Airlines
- GFCGail Force Express
- GNJGain Jet Aviation
- MTAGAK/Mitchell Aero
- SWFGalair International
- GLSGalaircervis
- GALGalaxy Air
- GXYGalaxy Airlines
- GASGalena Air Service
- GMAGama Aviation
- GNRGambia International Airlines
- NMLGambia New Millennium Air
- GMJGamisa Aviacion
- GNFGandalf Airlines
- GANGander Aviation
- GSAGarden State Airlines
- AHMGarrison Aviation
- GIAGaruda Indonesia
- GHSGatari Hutama Air Services
- GGSGATSA
- EGOGauteng Air Cargo
- GVNGavina
- GZPGazpromavia
- GBXGB Airlink
- GBLGB Airways
- GCSGCS Air Service
- FFUGEC Marconi Avionics
- GCCGECAS
- GEEGeesair
- GCOGemini Air Cargo
- GABGendall Air
- GDBGendarmerie Belge
- FGNGendarmie Nationale
- SWKGeneral Aerospace
- GWSGeneral Airways
- GNZGeneral Aviation
- GTHGeneral Aviation Flying Services
- XGAGeneral Aviation Terminal
- GMCGeneral Motors
- GNXGenex
- GENGENSA
- GSLGeographic Air Surveys
- GEGGeorgian Airlines
- TGZGeorgian Airways
- FGAGeorgian Aviation Federation
- GGFGeorgian Cargo Airlines Africa
- GNNGeorgian International Airlines
- GFGGeorgian National Airlines
- GAFGerman Air Force
- FLBGerman Air Force - FLB
- GAMGerman Army
- GERGerman International Air Lines
- GNYGerman Navy
- GHYGerman Sky Airlines
- GMIGermania
- GWIGermanwings
- GXGGermanXL
- GDNGerry's Dnata
- GFDGesekkschaft Fur Flugzieldarstellung
- GESGestair
- GTRGestar
- GJTGestion Aerea Ajecutiva
- GETGETRA
- GFWGFW Aviation
- GHIGH Stansted Limited
- GHTGhadames Air Transport
- GHAGhana Airways
- GHBGhana International Airlines
- NTCGibson Aviation
- RPSGlobal Air Charter
- GAGGlobal Air Operations
- GBSGlobal Air Services Nigeria
- GLCGlobal Aircargo
- GA0Global Airlines
- BSPGlobal Airways
- GAKGlobal Aviation and Services Group
- GBBGlobal Aviation Operations
- GF5Global Freightways
- GGZGlobal Georgian Airways
- GLJGlobal Jet Austria
- NSMGlobal Jet Corporation
- SVWGlobal Jet Luxembourg
- GSKGlobal Sky Aircharter
- GSSGlobal Supply Systems
- XGSGlobal System
- XGWGlobal Weather Dynamics
- GLWGlobal Wings
- GJAGlobe Jet
- GLPGlobus
- GMGGM Helicopters
- GOWGo Air
- GOEGo Fly (United Kingdom)
- RLXGo2Sky