Populism has become an increasingly salient concept in social science research and the public sphere, as radical parties in Europe, the United States, and beyond have come to increasingly rely on anti-elite discourse, often in combination with nationalist appeals and authoritarian governance practices. The Study Group on Populism, Nationalism and Radical Politics explores the driving forces behind the resurgence of populism and its effects on party systems, democratic practice, and intergroup relations. Drawing on the expertise of leading sociologists, political scientists, economists, and historians, our events interrogate central questions confronting scholars of radical politics and aim to stimulate discussion among faculty and students from across campus who share an interest in this important topic. We organize many of our events in conjunction with the Weatherhead Center’s Research Cluster on Global Populism.