OPEC
| Acronym | Definition |
|---|---|
| OPEC | Organization of the Petroleum Exporting Countries |
| OPEC | OFI Private Equity Capital (France) |
| OPEC | Ohio Prevention and Education Conference (Ohio Resource Network for Safe & Drug Free Schools & Communities) |
| OPEC | Old Protestant Episcopal Church |
| OPEC | Optical Proximity Effect Correction |
| OPEC | Ocean Processes and European Climate |