| Omni Collection | Industrial Manufacturing |
| Oneteam Clothing Company | Retail |
| Oneteam Clothing Company | Retail |
| Oola Sports LLC | Retail |
| Oola Sports LLC | Retail |
| OOREDOO Q.S.C. | Telecommunications |
| OOREDOO Q.S.C. | Telecommunications |
| Opticsense | Telecommunications |
| Opticsense | Telecommunications |
| Optimum Systems W.L.L. | Information Technology |
| Optimum Systems W.L.L. | Information Technology |
| Orbit Trading & Contracting Co. | Construction |
| Orbit Trading & Contracting Co. | Construction |
| Oriental Trading Company Limited | Industrial Manufacturing |
| Oriental Trading Company Limited | Industrial Manufacturing |
| Oryx Advertising Company WLL | Media |
| Oryx Advertising Company WLL | Media |
| Oryx Alliance | Construction |
| Oryx Alliance | Construction |
| Oryx Energy Projects & Services LLC | Services |
| Oryx Energy Projects & Services LLC | Services |
| Oryx Engineering Solutions LLC | Construction |
| Oryx Engineering Solutions LLC | Construction |
| ORYX GTL Ltd. | Oil and Gas |
| ORYX GTL Ltd. | Oil and Gas |
