GT1
The term referred GT1:
- A racing car from Porsche, Porsche 911 GT1 see
- A racing car from Nissan, Nissan R390 GT1 see
- A racing car from Lotus, Lotus Elise GT1 see
- A racing version of the Lamborghini Diablo
- The group GT1, a set of regulations for Gran Turismo racing car
- The Gran Turismo racing series FIA GT1 World Championship
- Russian gas turbine locomotive
- Disambiguation