| Ministry of Oil & Gas (JSRS) | Ministry of Defence | Royal Court Affairs (RCA) |
| Royal Office | Sohar Aluminium Co. LLC | Tender Board Oman |
| Royal Oman Police | Royal Court of Affairs, The Palace, Muscat | Oman Society of Contractors |
| Oman Society for Petroleum Services (OPAL) | Petroleum Development Oman | Oman Oil Refineries and Petroleum Industries Company (ORPIC) |
| OMRAN | Oman LNG |































































