Canada’s recent sesquicentennial celebrations were the latest in a long, steady progression of Canadian cultural memory projects. Unbecoming Nationalism investigates the power of commemorative performances in the production of nationalist narratives. Using “unbecoming” as a theoretical framework to unsettle or decolonize nationalist narratives, Helene Vosters examines an eclectic range of both state-sponsored social memory projects and counter-memorial projects to reveal and unravel the threads connecting reverential military commemoration, celebratory cultural nationalism, and white settler-colonial nationalism. Vosters brings readings of institutional, aesthetic, and activist performances of Canadian military commemoration, settler-colonial nationalism, and redress into conversation with literature that examines the relationship between memory, violence, and nationalism from the disciplinary arenas of performance studies, Canadian studies, critical race and Indigenous studies, memory studies, and queer and gender studies. In addition to using performance as a theoretical framework, Vosters uses performance to enact a philosophy of praxis and embodied theory.