| GT&T | Guyana Telephone and Telegraph Company 
| Others |
| GTT | Drops (not an acronym)
| Others |
| GTT | Gateway to Technology
| Others |
| GTT | GDAX Trading Toolkit
| Others |
| GTT | Geiger Tube Telescope
| Others |
| GTT | General Agreement on Tariffs and Trades
| Others |
| GTT | Generic Translation Table
| Others |
| GTT | Genomic Text Table
| Others |
| GTT | Girl Talk Time
| Others |
| GTT | Glass Tolerance Test
| Others |
| GTT | Glass Torch Technologies
| Others |
| GTT | Global Technical Talent
| Others |
| GTT | Global Telecom Technology
| Others |
| GTT | Global Telecommunications Technology
| Others |
| GTT | Global Temporary Tables
| Others |
| GTT | Global Title Translation
| Others |
| GTT | Global Title Translations
| Others |
| GTT | Global Tracking Trigger
| Others |
| GTT | Global Traffic Technologies
| Others |
| GTT | Global Transaction Team
| Others |
| GTT | Global Truck Technology
| Others |
| GTT | Glucose Test Tube
| Others |
| GTT | Glucose Tolerance Test
| Others |
| GTT | Glucose Tolerance Testing
| Others |
| GTT | Goes To Tokyo
| Others |
| GTT | Going Through Time
| Others |
| GTT | Gone To Texas
| Others |
| GTT | Gone to Texas That
| Others |
| GTT | Gone To Texas the
| Others |
| GTT | Good Till Triggered
| Others |
| GTT | Google Translator Toolkit
| Others |
| GTT | Gosha Turbo Tech
| Others |
| GTT | Got To talk
| Others |
| GTT | Government Technical testing
| Others |
| GTT | Gran Turismo Transatlantic
| Others |
| GTT | Gran Turismo Tribute
| Others |
| GTT | Gran Turismo Trophy
| Others |
| GTT | Grand Terrace Toastmasters
| Others |
| GTT | Grand Turing Turbo
| Others |
| GTT | Grand Turismo Transatlantic
| Others |
| GTT | Grand Turismo Tribute
| Others |
| GTT | Grof Transpersonal Training
| Others |
| GTT | Group Theatre Too
| Others |
| GTT | Group Trucks Technology
| Others |
| GTT | Gruppo Torinese Trasporti
| Others |
| GTT | Gt Turbo
| Others |
| GTT | Guyana Telephone and Telegraph
| Others |
| gtt. | drops
| Others |