| Oneteam Clothing Company | Retail |
| Oola Sports LLC | Retail |
| OOREDOO Q.S.C. | Telecommunications |
| Opticsense | Telecommunications |
| Optimum Systems W.L.L. | Information Technology |
| Orbit Trading & Contracting Co. | Construction |
| Oriental Trading Company Limited | Industrial Manufacturing |
| Oryx Advertising Company WLL | Media |
| Oryx Alliance | Construction |
| Oryx Energy Projects & Services LLC | Services |
| Oryx Engineering Solutions LLC | Construction |
| ORYX GTL Ltd. | Oil and Gas |
| Oryx Rotana Hotel | Leisure and Tourism |
| Osama Al Thawadi Trading & Contracting | Construction |
| Ottawa Cont. & Trading W.L.L. | Construction |
| Ox-Home | Industrial Manufacturing |
| Oxygen International W.L.L | Conglomerates |
| PAK TRADING AND TRANSPORT | Services |
| Palmyra Trading & Industrial | Conglomerates |
| Panorama Contracting & Engineering Services Co. W.L.L. | Construction |
| Paragon Shipping & Logistics WLL | Transport |
| Paris Food International Co.W.L.L. | Food and Beverages |
| PAT Engineering Enterprises Company | Construction |
| Patibon | Industrial Manufacturing |
| PC One | Retail |
