| Construction Dynamics LLC | Construction |
| Construction Dynamics LLC | Construction |
| Consulting Engineering Group | Construction |
| Consulting Engineering Group | Construction |
| Container Freight Station | Conglomerates |
| Container Freight Station | Conglomerates |
| Contraco WLL | Construction |
| Contraco WLL | Construction |
| Contrade Company Trading and Contracting | Construction |
| Contrade Company Trading and Contracting | Construction |
| Control Contracting & Trading Co. (Pvt.) Qatar | Conglomerates |
| Control Contracting & Trading Co. (Pvt.) Qatar | Conglomerates |
| Contromet W.L.L | Construction |
| Contromet W.L.L | Construction |
| Convert Engineering & Trading | Construction |
| Convert Engineering & Trading | Construction |
| Conxion Logistics & Heavy Equipments | Transport |
| Conxion Logistics & Heavy Equipments | Transport |
| COREO | Real Estate |
| COREO | Real Estate |
| Country Rent A Car | Transport |
| Country Rent A Car | Transport |
| Cozmo Travel Qatar | Leisure and Tourism |
| Cozmo Travel Qatar | Leisure and Tourism |
| Creative Action Design LLC | Services |
