Abstract. We explore the links between environmental change, human migration, and adaptation in the relatively mature governance system of the European Union (EU). It is shown that these connections are limited and, when made, tend to be security focused. This situation inhibits scope for migration (both internally within states and internationally between states) to be understood as a form of adaptation to economic, social, political, demographic, and environmental change. We assess the underlying dynamics of EU environmental policy, note the main modes and instruments used, and identify some of the chief dynamics in this policy fi eld. Finally, conclusions are drawn with respect to how, in future, the EU might interact with nonmember states on environment and migration-related issues.