| Company Logo | Company name | Country | Sector |
|---|---|---|---|
 | Omantel |  Oman | Digital Transformation |
 | Oman Chamber Of Commerce and Industry | Oman | Manufacturing |
 | Oman Shipping Company (SAOC) | Oman | Manufacturing |
 | Oman Fisheries Company | Oman | Agriculture |
 | Oman Drydock Company | Oman | Construction |
 | Oilserv Limited |  Nigeria | Energy |
 | Olimpica |  Colombia | Manufacturing |
 | OPGI |  Algeria | Construction |
 | Oman CMA | Oman | Finance |
 | Oman Airports Management Company (OAMC ) | Oman | Construction |
 | Oman Oil Company (S.A.O.C) | Oman | Energy |
 | Organisation of Islamic Cooperation (OIC) |  Saudi Arabia | Finance |
