GTR and GT-R can refer to:

Motor vehicles [link]

• Gran Turismo (disambiguation), with Racer, Grand Tourer Racing or similar, commonly associated with performance cars. Vehicles that uses the designation are:
  • BMW M3 GTR - a racing version of M3
  • Holden Torana GTR
  • Ford Mustang GT-R Concept, a 2005 concept by Ford based on the Mustang for racing possibilities.
  • Isuzu Bellett 1600GTR
  • Kawasaki GTR 1000GTR (aka Kawasaki Concours in USA and Canada), the litre sport touring motorcycle which was produced from 1986 to 2006
  • Kawasaki 1400GTR, a sport touring motorcycle produced by Kawasaki since 2007
  • Mazda Familia GT-R
  • Mazda Savanna RX-7GT-R
  • McLaren F1 GTR, the competition evolution of the McLaren F1 roadcar
  • Mercedes-Benz CLK GTR
  • Morgan Plus 8 GTR, a racing version of the Plus 8
  • Nissan Skyline GT-R
  • Nissan GT-R
  • Porsche 924 Carrera GTR, a racing version of the 924 Carrera GT
  • Toyota Carina 1600/2000GT-R
  • Toyota Celica 1600/2000GT-R
  • Ultima GTR
• Grand Touring Racing, the most common form of sports car racing worldwide
• GTR Euroseries, a short-lived European auto racing series

Computing and gaming [link]

• Guaranteed throughput router, also known as a Load-balanced switch#Single global router, a router with an architecture which guarantees 100% throughput
• A video game franchise by SimBin Studios, based on the FIA GT Championship
  • GTR - FIA GT Racing Game
  • GTR - FIA GT Racing Game 2
  • GTR Evolution

Cycling [link]

• GTR, a sub-brand of racing bicycles by GT Bicycles

Government [link]

• Government Technical Representative, see Contracting Officer's Technical Representative (COTR), a business communications liaison between the United States government and a contractor

Mathematics, medicine and science [link]

• Generalised time reversible Substitution model describes the process from which a sequence of characters of a fixed size from some alphabet changes into another set of traits
• General Theory of Relativity, also known as general relativity – abbreviated GR
• Guided bone regeneration or Guided Tissue Regeneration, a surgical procedure that uses barrier membranes to direct growth of new tissue
• Greater than

Music [link]

• GTR (band), founded by guitarists Steve Hackett and Steve Howe
• GTR, an abbreviation for guitar

Other transportation [link]

• Generic Tilt-rotor, a type of aircraft that combines the vertical lift capability of a helicopter with the speed and range of a turboprop airplane
• Grand Trunk Railway, a railway system which operated in the Canadian provinces of Quebec and Ontario, as well as the American states of Connecticut, Maine, Massachusetts, New Hampshire, and Vermont
• Grand Trunk Road, one of South Asia's oldest and longest major roads, linking India to Pakistan
• GTR, the IATA airport code for the Golden Triangle Regional Airport in Columbus, Mississippi

Others [link]

• In the D.I.C.E. (TV series), an acknowledgement response used by D.I.C.E. members, which is similar to FAB in the Thunderbirds TV series
• Global Technical Regulation(s), a set of vehicle legislative requirements that are being created by the United Nations Economic Commission for Europe World Forum for Harmonization of Vehicle Regulations
• GPS Timing Receiver, specialized GPS receivers that can provide timing with an accuracy better than 100 nanoseconds
• GTR-18A, also DGTR-18A and Smokey Sam, an inert training rocket, developed at the U.S. Naval Weapons Center, for simulating Surface to Air Missiles launches
• SMS language for Got To Run
• GTR Group, the company presently known as Mad Catz
• Green tree reservoir

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