GTO
- Ferrari 250 GTO
- Ferrari 288 GTO
- Ferrari 599 GTO
- GTO (Sinitta song)
- GTO (band)
- GTO Records
- GameTable Online
- Gate turn-off thyristor
- Gaussian-type orbital
- Geographic targeting order
- Geostationary transfer orbit
- Giraffe Tongue Orchestra
- Golgi tendon organ
- Gorton railway station
- Grand Touring Over
- Great Teacher Onizuka
- Greater Than One
- Guanajuato
- HSV GTO
- Jalaluddin Airport
- Mitsubishi 3000GT
- Mitsubishi Galant GTO
- Pontiac GTO
- Ready for Labour and Defence of the USSR
- The GTOs
- Walk the Earth