He has acted as a consultant to or worked with a range of companies, national and international official institutions including the Foreign & Commonwealth Office, foreign ministries in Europe and the Middle East, the European Commission, and various NGOs - ranging from Amnesty International to the Bertelsmann Foundation.
National Science Foundation | Ford Foundation | Rockefeller Foundation | John Simon Guggenheim Memorial Foundation | Electronic Frontier Foundation | Bill & Melinda Gates Foundation | Bertelsmann | New York Foundation for the Arts | Mozilla Foundation | Guggenheim Foundation | Alexander von Humboldt Foundation | Andrew W. Mellon Foundation | Wikimedia Foundation | Apache Software Foundation | foundation | Make-A-Wish Foundation | John D. and Catherine T. MacArthur Foundation | Clinton Foundation | Open Software Foundation | Konex Foundation | Foundation series | Cystic Fibrosis Foundation | Carnegie Foundation | Solomon R. Guggenheim Foundation | McKnight Foundation | Japan Foundation | Ingram Merrill Foundation | Helms Foundation College Basketball Player of the Year | Free Software Foundation | Calouste Gulbenkian Foundation |
Gunter Thielen (born 4 August 1942 in Quierschied) is Chairman and Chief Executive Officer of the Bertelsmann Foundation.