The International Institute for Sustainability Analysis and Strategy (IINAS) is an independent transdisciplinary research organization based in Darmstadt (Germany) which started operating in April 2012. IINAS is a new player in the research community: A small think tank being part of an extensive international network of scientists both within IINAS, and in many partner institutes as well as associated independent consultants, providing together integrated research, analyses and consultancy services in the sustainability domain. The approach of IINAS is characterized by its emphasis on networking and transdisciplinary work. Transdisciplinarity goes beyond interdisciplinary collaboration among scientists to include key stakeholders in all work phases – from defining the scope to implementing results. In our research we partner with decision-makers in private and public sectors as well as stakeholders. The latter include NGO such as IUCN and WWF Key clients and donors of IINAS are national government agencies in Germany and other European countries, the EU Commission, the European Parliament, and international institutions (e.g., FAO, GEF, IEA, UNEP). IINAS also works with associations, foundations, parliaments and the private sector, seeking diversity of sources as a core issue of its independence.