- Al Asmakh Group
- Al Fardan Properties
- Al Hithmi Real Estate Company
- Al Jaber Electromechanical Co.
- Al Jazeera Network
- Al Kulaifi Engineering
- Al Mana Computer Services
- Amiri Guard
- Arabian Engineering
- Aspire Zone
- Bab Ishtar Group
- Barwa Real Estate
- Bin Faizal Trading
- Bukshisha Contracting Co.
- Business Park Hotel
- Doha Grand Hotel
- Orange
- Secure Electric
- Vertex Engineering
- Gazeera Consulting Engineering
- Golden Sand Hotel
- Gulf Construction E.M. Company
- Hamad Medical Corporation.
- Hassanesco Trading & Contracting
- Iftha Qatar
- Ihorizon Trading
- Imperial Suites Hotel
- Jazeera Land
- Mazaata Real Estate
- Mechel Engineering
- Orient Star International
- Oredoo
- Qatar Airways
- Qatar Aluminum Company
- Qatar Development Trading Contracting
- Hasoob Security systems
- Al harib Security systems
- Gulf Drilling International
- Qatar Finance Tower
- Qatar Foundation
- Qatar Olympic Committee
- Qatar Petroleum
- Qatar Royal Hotel
- Qatariana Contracting Company
- Ramacotrading & Contracting
- Ras Gas
- Samco
- Shanon Engineering
- Structurel Qatar
- Technip Qatar
- Swissbell Hotel
- Trags Trading & Contracting
- Tricon
- Urban Contracting Co. (Ucc)
- Saboorji Paloonji
- Pixel technology solution