| Acronym | Definition |
|---|
| GT | Grand Touring |
| GT | Gran Turismo (GT Racing) |
| GT | Grand Theft (felony) |
| GT | Georgia Tech |
| GT | Guatemala |
| GT | Get Together |
| GT | Gene Transfer |
| GT | Girl Talk |
| GT | Gas Turbine |
| GT | Gifted and Talented |
| GT | Greater Than (computer math) |
| GT | Giant Tiger |
| GT | Grant Thornton LLP |
| GT | Google Toolbar |
| GT | Game Theory |
| GT | Gamertag (Xbox Live) |
| GT | Good Trip (various locations) |
| GT | Gross Tonnage (maritime) |
| GT | Game Trailers (est. 2002) |
| GT | Globus Toolkit (Global Alliance) |
| GT | Group Therapy (band) |
| GT | Group Telecom (Canadian telecommunications company) |
| GT | Global Temperature |
| GT | Good Try (games) |
| GT | Glass Tube (vacuum tube) |
| GT | Globe Telecom (Philippines) |
| GT | Greenberg Traurig, LLP (law firm) |
| GT | Guantanamo, Cuba |
| GT | Grounded Theory (research methodology; social sciences) |
| GT | Ground Truth (physical imaging) |
| GT | Group Technology |
| GT | Green Tire |
| GT | Gigatonnes |
| GT | Giant Toad |
| GT | Global Title (SS7) |
| GT | Guybrush Threepwood (Monkey Island game character) |
| GT | Glyphosate Tolerant (agriculture) |
| GT | Gin/Tonic |
| GT | Ground Test |
| GT | Gross Ton |
| GT | Gastric Tube |
| GT | Gene Trap |
| GT | Ground Terminal |
| GT | Gold-Tech |
| GT | Ground Team (Civil Air Patrol search and rescue) |
| GT | Goal Tending (basketball) |
| GT | Globe Temperature |
| GT | Guaranteed Traffic |
| GT | Ground Track |
| GT | Graphics Terminal |
| GT | Game-tying goal (hockey) |
| GT | Greater Trochanter |
| GT | Generator Transformer (power plants) |
| GT | Gazette Telegraph (Colorado Springs newspaper) |
| GT | General Technical Score (US DoD testing) |
| GT | Ground Time |
| GT | Gun Target |
| GT | Gigatexel |
| GT | Göteborgs-Tidningen (Swedish newspaper) |
| GT | Great Tribulation |
| GT | Generic Task |
| GT | Galilean Transformation |
| GT | Gelatinization Temperature |
| GT | Grand Trunk Railroad |
| GT | Grid Tool |
| GT | Geared Turbine |
| GT | Guernsey Telecoms (Guernsey, British Channel Island) |
| GT | Guanine-Thymine |
| GT | Give Tokens |
| GT | Group Traveler |
| GT | Guide Telescope |
| GT | Ground Transmission |
| GT | Ground Transmitter |
| GT | Genetic Technologist |
| GT | Transmitter Gain |
| GT | Gorgy Timing (Grenoble, France time synchronization company) |
| GT | Glial Tangle (neurology) |
| GT | Good Times Emporium (arcade center, Massachusetts) |
| GT | Gamov-Teller |
| GT | Gain to Noise Temperature Ratio |
| GT | Grid Transformer (UK grid substations) |
| GT | Ground Transmit |
| GT | Group Tactic |
| GT | Growler Test (armature test) |
| GT | Grunt Tech [US Navy hospital corpsman assigned to a USMC unit] :-) |
| GT | Grassetech (Delta, Utah, USA) |
| GT | Guidance Transmitter |
| GT | Government Transportable |