| Castle Constructions WLL | Construction |
| Castle for Building Materials Company | Industrial Manufacturing |
| Castle for Building Materials Company | Industrial Manufacturing |
| Cedars Motors & Trading Co WLL | Conglomerates |
| Cedars Motors & Trading Co WLL | Conglomerates |
| Celerity Shipping & Forwarding Co WLL | Transport |
| Celerity Shipping & Forwarding Co WLL | Transport |
| Central Ventilation System Co WLL | Industrial Manufacturing |
| Central Ventilation System Co WLL | Industrial Manufacturing |
| Central Ventilation Systems Co. WLL | Construction |
| Central Ventilation Systems Co. WLL | Construction |
| Century Hotel - Doha | Leisure and Tourism |
| Century Hotel - Doha | Leisure and Tourism |
| Century Trading & Contracting WLL | Oil and Gas |
| Century Trading & Contracting WLL | Oil and Gas |
| Century Trading and Contracting WLL Qatar | Services |
| Century Trading and Contracting WLL Qatar | Services |
| CEVA Logistics Qatar WLL | Transport |
| CEVA Logistics Qatar WLL | Transport |
| Challenger Limousine & Rent a Car | Transport |
| Challenger Limousine & Rent a Car | Transport |
| Charlotte Trading & Contracting | Food and Beverages |
| Charlotte Trading & Contracting | Food and Beverages |
| Chebli Machinery and Construction Company | Construction |
| Chebli Machinery and Construction Company | Construction |
