| Company Logo | Company name | Country | Sector |
|---|---|---|---|
 | Oman Oil Company (S.A.O.C) |  Oman | Energy |
 | Organisation of Islamic Cooperation (OIC) |  Saudi Arabia | Finance |
 | OK Free Trade Zone |  Nigeria | Manufacturing |
 | Oleomex |  Mexico | Manufacturing |
 | Oyuny Undra Group |  Mongolia | Manufacturing |
 | Odcon Holding Co., LTD | Mongolia | Construction |
 | OGDCL |  Pakistan | Energy |
