The three major Reference Works compiled by the UIA are the Yearbook of International Associations, providing the authoritative overview of international organizations; the International Congress Calendar, offering information on around 550,000 meetings and events in the world of international associations; and the Encyclopaedia of World Problems and Human Potential, a unique research platform interlinking world problems, action strategies and human values. Whereas the Encyclopaedia is available as a free public resource, there are several options to access the data assembled in the Yearbook and the Congress Calendar.

The statistics and surveys prepared by the UIA, most notably the International Meetings Statistics Report and the Survey on International Meeting Issues, are indispensable for a thorough analysis of the meetings and topical discussions by international associations. Besides, the UIA offers customized data extractions and customized statistical reports upon request.

Past publications by the UIA are freely available for research purposes, including a complete list of all UIA publications since its foundation in 1907. There is open access to a large number of the UIA’s journal, and the entire UIA archives may be consulted by appointment.