Raceteams - alphabetical overview: G
- G Private Racing
- G&A Racing
- G&W Motorsports
- G-Force
- G-Force Racing
- G-Tec
- G.A.C. Racing Team
- G.S. Srl
- G2 Racing
- GA Motorsport
- GA Racing
- Gabord Competición
- GAG Racing Team
- Galaxy Racing
- Galles Racing
- Gammon Megaspeed
- Garage 59
- Garibotti Racing
- Garnet Patterson Racing
- Garry and Warren Smith
- Garry Dumbrell Motorsport
- Garry Haywood Racing
- Garry Rogers Motorsport
- GASS Racing
- Gatellie International
- Gaunt Brothers Racing
- Gazoo Racing
- GB Autosport
- GBF
- GCR Racing
- GD Racing
- GDBA
- GDL Racing
- Gelles Racing
- GEM Motorsport
- Gemballa Racing
- Genesis Racing
- Genoa Racing
- Genoa Racing
- Gentle Swiss Racing
- Geoff Steel Racing
- Georgian Bay Motorsports
- Germain Racing
- GetSpeed Performance
- GF Motorsport
- GH Motorsport
- Ghinzani Arco Motorsport
- Giaffone Motorsports
- Gigawave Motorsport
- Giles Motorsport
- Gillespie
- Gillett Evernham Motorsports
- Gillian Track Events
- Gilmour Racing
- Ginn Racing
- Gioga
- Giraldi Tecnosport
- Giroix Racing Team
- GJ Motorsport
- Glass Benders
- Glenn Yee Motorsports
- Global Racing Group
- Global Racing Service
- Glorax Racing
- Gloria Pro Team
- GLPK Carsport
- GLPK Racing
- GLV Racing
- GM Motorsport
- GMB Motorsports
- GMG Racing
- GMMA Formula Racing
- Go FAS Racing
- Go Green Racing
- Go To One Racing
- Golden Motors
- Goldin Brothers Racing
- GomeSports
- Gonneau Racing
- GoodSmileRacing
- GoodSmileRacing / TeamUKYO
- Goree Multisports
- Gosselin Competition
- Gotcha Historic Racing Team
- Gotham Competition
- Götz Motorsport
- Gozzo
- GP Elite
- GP Motorsport
- GP Racing
- GPC Motorsport
- GPC Sport
- GPM Racing Team
- GPR Racing
- GPX Racing
- GR Asia
- Gradient Racing
- Graeme Holmes
- Graff Racing
- Graham Nash Motorsport
- Graham Sims
- Grahame Blee Racing
- Gramacho Competições
- Grant Racing
- Grasser Racing Team
- Grassi
- Gravity Racing International
- Grease Monkey Racing
- Great Wall Racing Team
- Greaves Motorsport
- Greco Motorsport
- Green Hornet Racing
- Green Team
- Greenmamba Racing
- Greg Murphy Racing
- Greycliff Racing
- Greyhound Motorsport
- Griffith's
- Grifo Corse
- Grohs Motorsport
- Grove
- Gruppe M Racing
- Gruppe Orange
- GS Motorsports
- GSK Grand Prix
- GT Corse
- GT Racing Team
- GT Technologies
- GT3 Endurance
- GT3 Racing
- GTA Motor Competición
- GTC Competition
- GTR Racing
- GTS Motorsport
- GU Racing
- Guardian Loan
- Guidare Formula
- Gulf Racing
- Gunnar Racing
- Gunselman Motorsports
- Guthrie Meyer Racing
- Guthrie Racing
- Gwen Racing