Following IUM 2010 in Ishikawa(Japan) and IUKM 2011 in Hangzhou(China), IUKM 2013 will be held at Beihang University, Beijing ,China between 12th and 14th of July 2013. IUKM 2013 aims to bring together worlds' specialists in the field of uncertainty management who will have an opportunity to debate throughout the conference and exchange research results, ideas as well as their experience towards developing applications. The objectives of the conference are: to bring together researchers working on uncertainty formalisms in information and knowledge systems; to attract researchers working in social sciences (economics, business, management and environmental sciences) who are interested in applying uncertainty-related tools and techniques; to bring together researchers and practitioners in order to foster the collaboration on research and application involving uncertainty management; and to present and discuss open research problems and novel applications.