Abstract : Cosmopolitan sociology has tackled broad themes like risk, family, religion, power, war, inequality, memory, and civil society movements exploring their reconfiguration in the global age. Tellingly, the concept of the national is often perceived, both in public and scientific discourse as the central obstacle for the realization of cosmopolitan orientations. Consequently, debates about the nation tend to revolve around its persistence or its demise. We depart from this either-or perspective by investigating the formation of the cosmopolitanized nations' as a facet of world risk society. This re-imagination of nationhood evolves, among other things, in the context of global norms (e.g. human rights), globalized markets, transnational migrations and embeddedness in international organizations. Here we focus on a mechanism involving the promulgation of 'risk societies'. Modern collectivities are increasingly preoccupied with debating, preventing and managing risks. However, unlike earlier manifestations of risk characterized by daring actions or predictability models, global risks cannot be calculated or forecast anymore. Accordingly, more influence accrues to the perception of risk, largely constructed by media representations of disasters. In a first step we distinguish between a normative cosmopolitanism and analytic cosmopolitization processes. The cosmopolitanized nations, we argue, reflect a new mode of collective identification, whereby we differentiate between presumptions of thick belonging and the actual proliferation of cosmopolitan affiliations. This leads to a gradual distinction between a conventional (and naturalized) view of the national and an emerging figuration of cosmopolitan nationhood. In a second step we overcome the territorial fixation of the social sciences by shifting our attention to temporal dimensions, with a particular focus on competing conceptions of the future. Our findings suggest that cosmopolitanized nations are reimagined through the anticipation of endangered futures. In a third step we demonstrate how these cosmopolitan transformations of nationhood are taking place in the context of the emergence of a world risk society regime that marshalls a set of cosmopolitan imperatives situating the global other in our midst. In a fourth step we illustrate these developments by exploring how the mediatization of risk, and concomitant notions of the future contribute to the re-imagination of cosmopolitan risk collectivities.