| Acronym | Definition |
|---|
| OHP | Oregon Health Plan |
| OHP | Office of Health Policy (various locations) |
| OHP | Oklahoma Highway Patrol (Oklahoma Department of Public Safety) |
| OHP | Ochotnicze Hufce Pracy (Polish: Volunteer Labor Corps) |
| OHP | Overhead Projector |
| OHP | Office of Health Protection (various locations) |
| OHP | over Heat Protection |
| OHP | Off Host Processing |
| OHP | Open Hypermedia Protocol |
| OHP | over Head Projector |
| OHP | One Hundred Percent |
| OHP | Occupational Health Program (various organizations) |
| OHP | Open Humanities Press |
| OHP | Ore Handling Plant (mining) |
| OHP | Overhead Press (weightlifting) |
| OHP | Office of Historic Preservation |
| OHP | Occupational Health Psychology |
| OHP | Observatoire de Haute-Provence (French observatory) |
| OHP | Oral History Project |
| OHP | Ohio Highway Patrol |
| OHP | Overhead and Profit (also seen as O&P) |
| OHP | Oral Health Program |
| OHP | Occupational Health Physician |
| OHP | Open House Party (radio show) |
| OHP | Oxford Health Plans Inc. |
| OHP | Office of Health Promotion |
| OHP | One Hour Photo (movie) |
| OHP | Outer Helmholtz Plane |
| OHP | Order of the Holy Paraclete (Whitby, UK) |
| OHP | Oven Hot Process (soap making) |
| OHP | Operation Head Pigeon (Invader Zim fan club) |
| OHP | Orchestre d'Harmonie de Pantin (French) |
| OHP | Operational Hydrology Program |
| OHP | Over Head Protection |
| OHP | Overnight Host Program (University of California, Berkeley) |
| OHP | Overhead on Poles |
| OHP | Ocean Hemispheres Project |