Timothy David Snyder is an American historian specializing in the history of Central and Eastern Europe, the Soviet Union, and the Holocaust. He is on leave from his position as the Richard C. Levin Professor of History at Yale University with plans (as of 1 July 2025 to transfer to the University of Toronto for an indefinite time.He is a permanent fellow at the Institute for Human Sciences in Vienna. Snyder serves on the Committee on Conscience of the United States Holocaust Memorial Museum, and is a member of the Council on Foreign Relations. He holds the inaugural Chair in Modern European History, supported by the Temerty Endowment for Ukrainian Studies, at the Munk School at the University of Toronto; he will teach at the school during the 2025–26 academic year.Snyder has written many books, including Bloodlands: Europe Between Hitler and Stalin (2010), On Tyranny: Twenty Lessons from the Twentieth Century (2017), The Road to Unfreedom (2018), and Our Malady (2020). Several of these have been described as best-sellers.