Gaston Defferre’s career is emblematic of the overlap between European integration and decolonization. As France’s Overseas Territories Minister (1956-1957), Defferre participated in Treaty of Rome talks, pushing Eurafrique policies to integrate France’s overseas territories into the European Economic Community. Defferre was Marseille’s mayor when the pieds-noirs fled independent Algeria. The pieds-noirs were treated both as full French citizens and as refugees upon arrival and their ambiguous status led French officials to reexamine the state’s responsibility to its citizens. This paper examines how Defferre’s contribution to the national discussion of pied-noir rights was informed by his earlier role advocating colonial inclusion in European integration, and how notions of European identity shifted as France lost its empire. An analysis of Defferre’s personal papers and Ministry of Foreign Affairs documents about European integration begins to answer the question: How did the movements of decolonization and European integration influence and shape one another?