| Abbreviation | Definition |
|---|---|
| HT | Height |
| HT | High Technology |
| HT | High Trajectory |
| HTAL | High-Temperature Acoustic Levitator |
| HTC | Hybrid Technology Computer |
| HTEXCH | HeaT EXCHanger |
| HTG | HeaTinG |
| HTLL | High Test Level Language |
| HTM | Heat Transfer Module |
| HTM | High Temperature |
| HTPB | Hydroxyl Terminated PolyButadiene |
| HTPB | Hydroxyl Terminated Polybutadiene (Propellant) |
| HTR | HeaTeR |
| HTR | Hydroxyl Terminated Polybutyiene |
| HTS | Heat Transfer System |
| HTS | Heat Transport Section |
| HU | Heart of the Universe |
| HUDE | Head Up Display Electronics |
| HUDE | Heads-Up Display Electronics |
| HUL | Hardware Utilization List |