'''GTR''' may refer to: {{TOC right}} ==Transportation== * 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 * Greater Thameslink Railway, Govia Thameslink Railway's nationalised successor * GTR Euroseries, a short-lived European auto racing series * Global Technical Regulations, a 1998 multinational agreement regarding vehicle regulations
===Automobiles=== * 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 medicine== * General theory of relativity, also known as General relativity, in physics * Generalised time reversible, in biology * Guided tissue regeneration, in dentistry
==Video games== * ''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 uses== * GTR (band), a British rock band ** ''GTR'' (album), their sole official studio album * Gareth Emery, British trance producer and DJ * Gateway to Research (Gtr), UK research information portal * GTR-18 Smokey Sam, an American SAM training rocket * Green tree reservoir, flooded forest land
==See also== * GT (disambiguation)<!--per Grand tourer-->
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