This paper is interested in the interdisciplinary characteristics of European integration studies. It explores how the institutional and intellectual, internal and external boundaries of this interdisciplinary field are shaped. For this purpose, it discusses two interlocking dynamics that are most important: on the one hand, the European Union actively attempts to mobilise European integration studies to contribute to building a united Europe by providing specific spaces, resources, and infrastructures for academic research and the public dissemination of results. On the other hand, the external and internal boundaries of this interdisciplinary field are shaped by the movements and interactions of scholars from different academic backgrounds. Together, the different academic strands and policies coproduce the interdisciplinary field of European integration studies. Suggesting avenues for future research, the conclusion recommends analysing key debates in the context of European integration in terms of boundary objects around which academics, policy-makers, and publics can engage with each other and points to specific sites for further observations of these processes of coproduction.