| Abbreviation | Definition |
|---|---|
| OGG | Kahului Airport |
| OGV | Other Goods Vehicle |
| OH | Observation Helicopter |
| OH | Over Heat |
| OH | Overall Height |
| OHC | Over-Head-Cam |
| OHE | Off-Highway Engineering |
| OHFL | Oak Harbor Freight Lines |
| OHMEA | Office of Hazardous Materials Exemptions and Approvals |
| OHMS | Office of Hazardous Materials Standards |
| OHRV | Off Highway Recreational Vehicle |
| OHS | Office of Highway Safety |
| OHV | Off Highway Vehicle |
| OHV | Off Highway Vehicles |
| OHV | Old Highway Vehicle |
| OHV | Ordinary Highway Vechicle |
| OHV | Over Head Valve |
| OHV | Overhead Hoist Vehicle |
| OHVD | Over Height Vehicle Detector |
| OHVI | Over- Head V In-line diesel engine |