| Abbreviation | Definition |
|---|---|
| HOV | Hispanic Ocupational Vehicle |
| HOV | Hitler Outside Vehicle |
| HOV | Hover Over Vehicle |
| HOV | Human Occupied Vehicle |
| HOV | Hybrid Only Vehicles |
| HOVL | high occupancy vehicle lane |
| HOVL | High Occupancy Vehicle Lanes |
| HP | Horizontal Pitch |
| HP&R | Highway Planning and Research |
| HPAS | Hydraulic Power Assisted Steering |
| HPCV | Human Powered Cardboard Vehicle |
| HPE | High Performance Environment |
| HPFV | High Performance Freight Vehicles |
| HPFV | High Productivity Freight Vehicles |
| HPL | Hapag Lloyd |
| HPMS | Highway Performance Monitoring System |
| HPMV | High Productivity Motor Vehicles |
| HPS | High Powered Sedan |
| HPT | High Pressure Turbo |
| HPTA | Human Powered Transportation Association |