| OREP | Occupational Risk & Exposure Profile 
| Others |
| OREP | Ocean Resources and Ecosystems Program
| Others |
| OREP | Office of Realty and Environmental Planning
| Others |
| OREP | Office of Renewable Energy Programs
| Others |
| OREP | Office of Reservoir Evaluation and Production
| Others |
| OREP | Office of Residential and Electronic Programs
| Others |
| OREP | Oldham Race Equality Partnership
| Others |
| OREP | Online Resource Efficiency Platform
| Others |
| OREP | Ontario Research Enhancement Program
| Others |
| OREP | Oregonians for Renewable Energy Progress
| Others |
| OREP | Organization of Real Estate Professionals
| Others |
| OREP | Oxford Review of Economic Policy
| Others |