Abstract.Are nationalism and international economic integration irreconcilable? This paper explores the theoretical connections between these two phenomena and develops a framework to assess the implications of international economic integration for nationalist movements in the developed West. We focus upon the structural context of nationalism in democratic societies, emphasising the impact of changes in the international political economy and the influence of domestic institutions. Although the demand for secession may not stem from economic calculations, the expected costs and benefits of independence are constraints to nationalist mobilisation and are conditioned by the structure of the international political economy. We identify three ideal types of international structures and discuss how the strategies and prospects of nationalist movements are shaped within each of them. We find that a structure of ‘institutionalised interdependence’ is most conducive to nationalist mobilisation in a liberal democratic context, but the impact of economic integration depends largely upon conditions defined by domestic institutional structu