| Acronym | Definition |
|---|
| ORP➣Oxidation-Reduction Potential |
| ORP➣Offender Reentry Program |
| ORP➣Original Research Proposal (graduate studies) |
| ORP➣Original Retail Price |
| ORP➣Optional Retirement Program |
| ORP➣Off Road Pipe |
| ORP➣Open Router Project |
| ORP➣Office of River Protection |
| ORP➣Office of Research and Publications (various schools) |
| ORP➣Off Road Parking (housing, UK) |
| ORP➣Objective Rally Point (Army) |
| ORP➣Organisational-Review Programme (Ireland) |
| ORP➣Office of Radiation Protection |
| ORP➣Oakdale Research Park (Univerity of Iowa) |
| ORP➣Oral Rehydration Point (health resource) |
| ORP➣Origo Resource Partners (UK) |
| ORP➣Open Runtime Platform |
| ORP➣Office of Radiation Programs (US EPA) |
| ORP➣Operational Recovery Plan |
| ORP➣Ocean Reception Point (US DoD) |
| ORP➣Operational Readiness Platform |
| ORP➣Operational Ration Pack |
| ORP➣Operational Research Project (India) |
| ORP➣Overall Responsible Party (public HIV surveillance official) |
| ORP➣Okret Rzeczypospolitej Polskiej (Polish: Ship of the Polish Republic; Poland) |
| ORP➣Occurrence Reporting Program |
| ORP➣Originating Responsibility Plan |
| ORP➣Oil Recovery Plant |
| ORP➣Organizational Performance Review |
| ORP➣Oficina de Responsabilidad Pública (Spanish, Guatemalan Internal Affairs office) |
| ORP➣Operation Readiness Plan |
| ORP➣Operational Requirements Panel |
| ORP➣Optical Recorder Peripheral |
| ORP➣Operative Radiated Power |
| ORP➣Ordinary Renewal Process |
| ORP➣Order Review Point |
| ORP➣Optical Reference Plane |