| Abbreviation | Definition |
|---|---|
| GTL | Global Telesystem Limited |
| GTL | Guarantee Trust Life Insurance Company |
| GTLL | Great Titchfield Leisure Lounge |
| GTM | Goten Trunks And Marron |
| GTMA | Gas Turbine Materials Associates |
| GTO | Green Thumbs Operation |
| GTO | Groep Technische Ondesteuning |
| GTP | Global TransPark |
| GTPL | Galaxy Thermoplast Pvt Ltd |
| GTPL | Geojit Technologies Pvt Ltd |
| GTPL | Gujarat Television Pvt Ltd |
| GTR | Golden Triangle Refineries |
| GTRA | Government Technology Research Alliance |
| GTRC | Georgia Tech Research Corporation |
| GTS | Galaxy Tool Supply |
| GTS | Galens Tag Service |
| GTS | Good Times Systems |
| GTS | Gordon's Transport System |
| GTS | Green Tiger Software |
| GTSI | Government Technology Services, Incorporated |