| Acronym | Definition |
|---|
| GTTC➣Geoscience Technology Training Center (various locations) |
| GTTC➣Goodfellow Technical Training Center |
| GTTC➣Ginseng and Tang-Kuei Ten Combination |
| GTTC➣Grahamstown Teachers Training College (South Africa) |
| GTTC➣Geospatial Technologies Training Center (University of New Hampshire) |
| GTTC➣Global Trade and Technology Center (New York, NY) |
| GTTC➣Gigabit to the Customer (broadband service) |
| GTTC➣Government Toolroom and Training Center (Karnataka) |