| Acronym | Definition |
|---|
| OIPA➣Oklahoma Independent Petroleum Association |
| OIPA➣Organizzazione Internazionale Protezione Animali (Italian: International Organization for the Protection of Animals) |
| OIPA➣Office of Intellectual Property Administration |
| OIPA➣Oklahoma Independent Producers Association |
| OIPA➣Office of Information and Public Affairs |
| OIPA➣Olympic Insignia Protection Act (Australia) |