| UAQ Safety & Consultancy | Education |
| UAQ Safety & Consultancy | Education |
| UCT Cleaning & Trading Co. W.L.L | Conglomerates |
| UCT Cleaning & Trading Co. W.L.L | Conglomerates |
| Ultimate International Trading | Construction |
| Ultimate International Trading | Construction |
| Ultimate Trading and Contracting Company W.L.L | Construction |
| Ultimate Trading and Contracting Company W.L.L | Construction |
| Unified Electromecanical LLC | Construction |
| Unified Electromecanical LLC | Construction |
| Unified Electromechanical WLL | Conglomerates |
| Unified Electromechanical WLL | Conglomerates |
| Unigulf Trading & Contracting | Conglomerates |
| Unigulf Trading & Contracting | Conglomerates |
| Union National Bank - Qatar | Financial Services |
| Union National Bank - Qatar | Financial Services |
| Uniplast Company | Industrial Manufacturing |
| Uniplast Company | Industrial Manufacturing |
| Unique Rent A Car | Transport |
| Unique Rent A Car | Transport |
| Unique Trading W.L.L | Industrial Manufacturing |
| Unique Trading W.L.L | Industrial Manufacturing |
| United Brothers Trading & Contracting WLL | Construction |
| United Brothers Trading & Contracting WLL | Construction |
| United Building DCTC WLL | Construction |