The following is a representative list of clients that has included multilateral development agencies, corporations, consultants and governments:

Arthur D. Little Inc.
Associated Consulting Engineers (ACE)
AT&T
Basil (Frank E.)
European Bank for Reconstruction and Development (EBRD)
Harvard University
IBM
Ministry of Housing Bahrain
NATO
Planning & Development Corporation (PADCO)
Royal Commission for Jubail and Yanbu
Royal Family of Saudi Arabia
Sabek (Mohamed Al) Architects/Planner
Trik Alireza Architects/Planners
United Nations
US Agency for international Development (USAID)
US National Parks Service
World Bank
World Resources Institute