In her introduction to the themed cluster “Nationalism, (Anti-)Communism and Violence in the European Cold War,” the author contextualizes the issue's research contributions on Greece, Czechoslovakia, and Bulgaria. She introduces the methodological rationale and highlights what binds the three case studies together: They explore how nationalism was woven into Cold War societies. The authors employ, as analytical prisms, both physical and symbolic violence in order to visualize empirically the workings of nationalism in the service of both communism and anti-communism. Hitherto, few scholars have focused on the interconnections between nationalism, (anti-)communism, and violence in Cold War east central and southeastern Europe.