| OPIP | Office De Promotion Des Investissements Prives 
| Others |
| OPIP | Office of Private Investment Promotion
| Others |
| OPIP | Oficina Provincial De Inspecciones Pesqueras
| Others |
| OPIP | Older Peoples Intervention Programme
| Others |
| OPIP | OMA Priority Insurance Program
| Others |
| OPIP | Onondaga Partners In Prevention
| Others |
| OPIP | Opioid Prescribing Improvement Program
| Others |
| OPIP | Optimization and Process Improvement Program
| Others |
| OPIP | Optimization and Process Improvements Program
| Others |
| OPIP | Optional Personal Injury Protection
| Others |
| OPIP | Oregon Pediatric Improvement Partnership
| Others |
| OPIP | Organizacion De Pueblos Indigenas De Pastaza
| Others |
| OPIP | Organizational Performance Improvement Plan
| Others |
| OPIP | Organizational Performance Improvement Project
| Others |
| OPIP | Outdoor Play Interventions Program
| Others |
| OPIP | Outdoor Play Interventions Project
| Others |
| OPIP | Overall Permanent Improvement Program
| Others |