| Abbreviation | Definition |
|---|---|
| HTTG | Health Technology Task Group |
| HTTS | Head of Transmission Technology Spectrum |
| HTTT | High temperature turbine technology |
| HTV | Hypersonic Technology Vehicle |
| HTW | Health Technology Wales |
| HTW | High Technology World |
| HTWC | High Technology World Company |
| HTZ | High Technology Zone |
| HTZ | High Technology Zones |
| HUST | Hanoi University of Science and Technology |
| HUST | Harbin University of Science and Technology |
| HUST | Harrisburg University of Science and Technology |
| HUST | Hsiuping University of Science and Technology |
| HUST | Huazhong University of Science and Technology |
| HVTT | Heavy Vehicle Transport Technology |
| HVZK | Honest-Verifier Zero-Knowledge (cryptography) |
| HWT | Hollow Weld Technology |
| HWT | Huisman Well Technology |
| HWTT | Hybrid Wetland Treatment Technology |
| HYT | High Yield Technology |