GTR may refer to:
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TransportationEdit
- Great River Railroad, in Mississippi, US
- Grand Trunk Railway, a defunct North American railway
- Golden Triangle Regional Airport (IATA and FAA LID codes), serving Columbus, Mississippi, US
- Govia Thameslink Railway, a British railway operator
- GTR Euroseries, a short-lived European auto racing series
- Global Technical Regulations, a 1998 multinational agreement regarding vehicle regulations
AutomobilesEdit
- Gran Turismo (racing), a type of sports car
- BMW M3 GTR
- Holden Torana GTR
- Isuzu Bellett GT-R
- Mazda Familia GT-R
- McLaren F1 GTR
- McLaren P1 GTR
- McLaren Senna GTR
- Mercedes-AMG GT R
- Mercedes-Benz CLK GTR
- Nissan Skyline GT-R
- Nissan GT-R
- Porsche 718 GTR Coupe Prototype 1962
- Porsche 924 Carrera GTR
- Toyota Celica 2000 GTR
- Ultima GTR
- Ford Mustang GT-R Concept car
Science and medicineEdit
- General theory of relativity, also known as General relativity, in physics
- Generalised time reversible, in biology
- Guided tissue regeneration, in dentistry
Video gamesEdit
- GTR – FIA GT Racing Game, a video game
- GTR Evolution, a video game
- GTR Group, owner of the defunct video game company Mad Catz
Other usesEdit
- GTR (band), a British rock band
- GTR (album), their sole official studio album
- Gateway to Research (Gtr), UK research information portal
- GTR-18 Smokey Sam, an American SAM training rocket
- Green tree reservoir, flooded forest land