In recent years there has been a substantial growth of attention given to the impacts and consequences of populism in foreign policy, with studies focusing on a wide range of case studies across the world. However, we know less about how populist foreign policy travels from the national to the EU level. For a long time, EU foreign and security policies appeared to remain insulated from the pressures of populist and Eurosceptic politics, not least because of the intergovernmental nature of this policy. Recent studies have observed an increase in politicisation and contestation in this policy domain but have not systematically explored the extent to which this might be linked to the arrival of populist parties to government in several member states. This research seeks to examine how, whether, and to what extent populism influences EU foreign policy. Specifically, it seeks to answer the following questions: has populism increased the contestation of EU foreign policy? And to what extent have populist governments been able to shape EU foreign policies and practices?