The Hannah Arendt Institute for Totalitarianism Studies (German: Hannah-Arendt-Institut für Totalitarismusforschung, abbreviated HAIT) is a research institute hosted by Dresden University of Technology and devoted to the comparative analysis of dictatorships. The institute focusses particularly on the structures of Nazism and Communism as well as on the presuppositions and consequences of the two ideological dictatorships. The institute is named after the German-American philosopher and political scientist Hannah Arendt, whose magnum opus The Origins of Totalitarianism (1951) is considered across disciplines as one of the most influential works of the 20th century and continues to shape in particular scholarly discussions of totalitarian systems of political domination.