| GTD | Galactic Terran Destroyer 
| Others |
| GTD | Game Time Decision
| Others |
| GTD | Garbage Truck Driver
| Others |
| GTD | Geared Traction Drive
| Others |
| GTD | Generalized Tamm Dancoff
| Others |
| GTD | Generic Transparency Descriptor
| Others |
| GTD | Genetically Transmitted Disease
| Others |
| GTD | German Testing Day
| Others |
| GTD | German Truck Driver
| Others |
| GTD | Gestational Trophoblastic Disease
| Others |
| GTD | Get Things Done
| Others |
| GTD | Getting Things Done
| Others |
| GTD | Gifted Talented and Differentiation
| Others |
| GTD | Ginger The Dog
| Others |
| GTD | Global Terrorism Database
| Others |
| GTD | Globalisation Transnationalism and Development
| Others |
| GTD | Glyoxal Trimeric Dihydrate
| Others |
| GTD | Golf Twin Drive
| Others |
| GTD | Good Til Day
| Others |
| GTD | Good Till Day
| Others |
| GTD | Goodwood Track Day
| Others |
| GTD | Got The Draws
| Others |
| GTD | Gran Turismo Diesel
| Others |
| GTD | Grand Touring Diesel
| Others |
| GTD | Grand Turbo Diesel
| Others |
| GTD | Grarg The Destroyer
| Others |
| GTD | Great Truck Drivers
| Others |
| GTD | Greenville Tool and Die
| Others |
| GTD | Group Travel Directors
| Others |
| GTD | Gt Daytona
| Others |
| GTD | Gt Developments
| Others |
| GTD | Guaranteed
| Others |
| GTD | Gyroplane Technology Demonstrator
| Others |