Timothy D. Sisk is Professor of International and Comparative Politics at the Josef Korbel School of International Studies, University of Denver and Director of the Institute for Comparative and Regional Studies at the School. At the University of Denver, he also chairs the Institutional Review Board (IRB) for the Protection of Human Subjects in Research.

His research, teaching and policy-oriented work focuses on democratization and electoral processes in fragile and post-war contexts. Professor Sisk also researches the role of international and regional organizations, particularly the United Nations, in peace operations, peacemaking, and peacebuilding.

Prior to joining the University of Denver in 1998, Sisk was a Program Officer and Research Scholar in the Grant Program of the United States Institute of Peace in Washington. Sisk earned a Ph.D. “with distinction” in political science from The George Washington University, in 1992, and an MA in International Journalism (1984) and a BA in Foreign Service and German (1982) from Baylor University.