| Commercial Bank Financial Services (L.L.C.) | Financial Services |
| Commitement Engineering Works | Construction |
| Commitement Engineering Works | Construction |
| COMMITMENT ENGG. WORKS | Construction |
| COMMITMENT ENGG. WORKS | Construction |
| Commodore Qatar Contracting Company L.L.C. | Construction |
| Commodore Qatar Contracting Company L.L.C. | Construction |
| Communications Regulatory Authority | Governmental Institutions |
| Communications Regulatory Authority | Governmental Institutions |
| Computer Arabia W.L.L. | Information Technology |
| Computer Arabia W.L.L. | Information Technology |
| Computer World | Conglomerates |
| Computer World | Conglomerates |
| Concorde Hotel Doha | Leisure and Tourism |
| Concorde Hotel Doha | Leisure and Tourism |
| Confidence Engineering and Development Company | Construction |
| Confidence Engineering and Development Company | Construction |
| ConocoPhillips Qatar Ltd | Oil and Gas |
| ConocoPhillips Qatar Ltd | Oil and Gas |
| Conserved Foodstuffs Distribution Company W.L.L. | Food and Beverages |
| Conserved Foodstuffs Distribution Company W.L.L. | Food and Beverages |
| Consolidated Gulf Company | Information Technology |
| Consolidated Gulf Company | Information Technology |
| Construction Commissioning Maintenance Services WLL | Construction |
| Construction Commissioning Maintenance Services WLL | Construction |
