| Abbreviation | Definition |
|---|---|
| HSV | H Special Vehicles |
| HSV | Happy Sunday Vehicles |
| HSV | Holden Special Vehicle |
| HT | Highway Terrain |
| HT | Horrible Treadwear |
| HT | Human Transporter |
| HTA | Hawaii Transportation Association |
| HTA | Heavier Than Air |
| HTC | House Transportation Committee |
| HTFS | Hi Tech Freight Solutions |
| HTMS | Highway Transportation Management Systems |
| HTOL | Horizontal Take-Off and Landing |
| HTP | Highway Traffic Point |
| HTS | Highway Traffic Safety |
| HTS | Highway Transportation System |
| HTT | Hyperloop Transportation Technologies |
| HTV | Heavy Tactical Vehicle |
| HTV | Heavy Transport Vehicle |
| HTV | Hypersonic Test Vehicle |
| HTV | Hypervelocity Test Vehicle |