| Abbreviation | Definition |
|---|---|
| OEM | Original Equipment Manufacturer |
| OEP | Onyx Employee Portal |
| OEQ | Organizational Effectiveness Questionnaire |
| OER | Oil Extract Rate |
| OERB | Other Energy Related Business |
| OES | Original Equipment Supplier |
| OF | Order Form |
| OFA | Occupational First Aid |
| OFA | Office of Financial Aid |
| OFAC | Ohio Financial Accountability Certification |
| OFB | Open For Business |
| OFC | Office |
| OFC | Optional Federal Charter |
| OFD | Official Series Description |
| OFD | Out For Delivery |
| OFFICE | On Fourteenth Floor Is Corporate Evil |
| OFI | Other Financial Institution |
| OFI | Other Financial Intermediaries |
| OFL | Out For Lunch |
| OFO | Operational Flow Order |