Jacek Kugler (born March 19, 1942) is a prominent American political scientist and scholar of International Relations. He is the former Chair of the Department of Politics and Policy at Claremont Graduate University in Claremont, California. Kugler is one of the founders of Power Transition Theory in International Relations Theory. His work on economic consequences of war, long term power transitions and political performance of nations have been widely debated within the field of international relations. He is a student of A.F.K Organski.