| Acronym | Definition |
|---|
| ORPP➣Ontario Retirement Pension Plan |
| ORPP➣Ocean Research Priorities Plan |
| ORPP➣Open Robotics Peripheral Platform |
| ORPP➣Office of Regional Policy and Planning |
| ORPP➣Optimized Relativistic Pseudopotential |
| ORPP➣Open Reduction and Percutaneous Pinning |
| ORPP➣Ordinary Reasonable and Prudent Person (law) |