GT

GT, Gt or G-T may refer to:

Medicine

• Glanzmann's thrombasthenia, a rare medical condition
• Gain of thyroid, or Secretory capacity of the thyroid gland, a calculated parameter for diagnosis of thyroid disorders
• Glutamyl transpeptidase, a marker of liver disease

Science and technology

• .gt, the Internet country code top-level domain for Guatemala
• Gas turbine, a rotary engine that extracts energy from a flow of combustion gas
• Geometry & Topology, a mathematical journal
• Giant trevally, a species of fish from the Carangidae family
• Gigabyte Technology, a computer hardware manufacturer
• Gigatesla, an SI unit of magnetic flux density
• Gigatonne, (Gt) a metric unit of mass
• Gigatransfer, a number of data transfers (or operations)
• Global Title, an address used for routing signaling messages on telecommunications networks
• Gross tonnage, a unitless measure of the size of merchant ships
• Grounded theory, a method for generating theories especially in social sciences
• Antenna gain-to-noise-temperature, (G/T), a figure of merit for satellite antennas
• Group technology, a method for organization of a manufacturing system

Cars

• Grand tourer (Italian: gran turismo), usually a high-performance luxury automobile designed for long-distance driving
• Alfa Romeo GT, a sport car built by Alfa Romeo
• Chevrolet Vega GT, a Chevrolet Vega with performance, handling, and trim options
• FIA GT Championship, an international sports car racing series
• Ford GT, a supercar built by Ford
• Grand Touring, used by the IMSA GT Championship
• Lightning GT, a British electric sports car
• Opel GT, a sports car built by Opel
• Mercedes-AMG GT
• Saab GT750, a 1958-1960 automobile by Saab
• Maserati GranTurismo
• Mini 1275GT

Places

• Georgia Tech, the Georgia Institute of Technology, a university in the US
• Georgetown, Guyana, the capital of Guyana
• Guatemala, by ISO country code
• St. Joseph's College, Gregory Terrace, a Catholic boys' school in Australia

Companies

• GT Bicycles, a large American manufacturer of road, mountain, and BMX bicycles
• Goodyear Tire and Rubber Company, a multinational tire manufacturer
• Göteborgs-Tidningen, a Swedish newspaper
• Grant Thornton LLP, a public accounting firm
• Greenberg Traurig, an international law firm
• Mark Goodson-Bill Todman Productions, or simply Goodson-Todman Productions (G-T), later renamed Mark Goodson Productions, now part of FremantleMedia

Entertainment

• Gay Times, a UK culture magazine for gay males, known also as GT
• Dragon Ball GT, an anime
• Gran Torino (film), a 2008 drama starring Clint Eastwood
• Gran Turismo (album), a 1998 album by the Cardigans
• Gulliver's Travels, a story published in the 18th century
• Gyllene Tider, a Swedish pop group
• Groove Terminator, Australian electronic music artist

Video games

• GT Interactive, an American video game developer
• GameTrailers, a video game website
• Golden Tee Golf, golf video game
• Gran Turismo (series), a series of racing video games

Transportation

• Grand Trunk Railway (1852–1923), a former railroad in Canada and northeast US
• Grand Trunk Road, a highway connecting Bangladesh, India, Pakistan and Afghanistan

Computing

• Globus Toolkit, a software framework for implementing computational grids
• Google Talk, Google's instant-messaging client
• Google Translate, Google's translation service
• Graph theory, the branch of discrete mathematics dealing with the data structure
• "Greater than", a relational operator used in computer languages

Other uses

• Gifted and talented education, a broad term used in the education of certain children
• Gin and tonic, a drink