The Gottlieb Duttweiler Institute (GDI) is an independent think tank in economics, society and consumption. The trend research institute based in Rüschlikon near Zurich is the oldest think tank in Switzerland. The GDI is part of the "Im Grüene" Foundation. In keeping with the wishes of its founder, Gottlieb Duttweiler, the non-profit organisation GDI is a "place for reflection and encounters" for the purpose of conducting "scientific research in the social and economic fields".
GDI researchers analyse megatrends and countertrends and develop future scenarios for the economy and society. Their findings are reported in studies and books and discussed at conferences and events. The GDI is a practice-oriented, independent institution with a focus on the early identification of trends in the retail sector.
As a place for encounters, the GDI hosts conferences with leading thought leaders and decision-makers to develop novel ideas about future developments. In addition, the institute also organises events on current topics for a broader public. Over and above this, the GDI also rents out spaces and infrastructure for business and private functions.