| Abbreviation | Definition |
|---|---|
| OBR | Oversees Business Report |
| OBU | Offshore Banking Unit |
| OCBC | Overseas Chinese Banking Corporation |
| OCCI | Osaka Chamber of Commerce & Industry |
| OCFB | Overseas Chinese Family Business |
| OCRE | l’Ombudsman Canadien de la Responsabilité des Entreprises |
| ODCP | ORCS Direct Control Protocol |
| ODI | One Day International |
| ODTC | Office of Defense Trade Controls |
| OEBP | One-Envelope Bidding Procedure |
| OECD | Organization for Economic Co-operation and Development |
| OEE | Office of Export Enforcement |
| OEEC | Organisation for European Economic Cooperation |
| OEIC | Open Ended Investment Companies |
| OEL | Office of Export Licensing |
| OEMT | Online Electronic Money Transfer |
| OEXS | Office of EXport Services |
| OF | Ocean Freight |
| OFAC | Office of Foreign Assets Control |
| OFC | Offshore Financial Center |