Following are the major clients. This list includes Multi-national and Qatar-based companies, educational institutions, contracting companies and major organizations.
   
   
   
 
•
 Qatar Petroleum (QP)
•
 Ras-Laffan LNG Co. ltd. (Rasgas)
•
 North-Atlantic College
•
 Qatar Fertilizers Company
•
 Qatar Electricity & Water co
•
 Qatar National Hotels
•
 Qatar National Navigation and Trpt. Co. Ltd.
•
 Arab Engineering Bureau
•
 Arco Qatar
•
 Alstom Power
•
 British Council
•
 CCIC
•
 CDC
•
 DHV International
•
 Elf Petroleum
•
 GOIC
•
 Hyundai Engineering Corp.
•
 Hyder Consultancy (Acer John Taylor)
•
 Hamad Medical Corporation
•
 Keo International
•
 L.G. Engineering
•
 Mersek Oil
•
 MECON
•
 Mecon Kharafi
•
 Maunsel Consultancy
•
 Mansal Offshore
•
 Philips Petroleum
•
 Penspen International
•
 Qatar Electricity & Water (KAHRAMAA)
•
 Qatar Shipping Co.
•
 Qatar Chemical Co.
•
 Rambol
•
 Samsung Corporation
•
 SOS Baker Oil
•
 Technip Italy
•
 Worley Qatar
•
 American School, Doha
•
 Al Khor International School, Al Khor
•
 Bright Future Pakistani Schools
•
 Doha English Speaking School, Al Khor
•
 Modern English School
•
 Pak Shama School, Doha
•
 Park House English School
•
 Qatar International School, Doha
•
 Qatar Aeronautical College
•
 Wintershall