| Abbreviation | Definition |
|---|---|
| OWT | Omega World Travel |
| OWT | One World Telecommunications |
| OWUV | One World Universe, Inc. |
| OWV | Our Wedding Vendors |
| OWVI | One World Ventures, Inc. |
| OWW | Ogunquit Web Works |
| OWW | Osa Water Works |
| OWX | Other World eXpress |
| OXB | Oxbow Powerhouse |
| OXB | The Bay Club, Ocean City, Maryland |
| OXF | Oxford Industries, Inc. |
| OXG | Oxford Properties Group |
| OXSQ | Oxford Square Capital Corporation |
| OXT | Oaxaca Transportation |
| OYA | Oxford Yacht Agency |
| OYB | Organize Your Beanies |
| OYD | Oh Yeah Designs |
| OYG | OrangeYouGlad |
| OYI | Optimum Yield, Inc. |
| OYK | Orlando Yamaha Kawasaki |