This article introduces the Special Issue on ‘Interpretivism and the English School of International Relations’. It distinguishes between what we term the interpretivist and structuralist wings of the school and argues that disagreement about its preferred approach to the study of international relations has generated confusion about what it stands for and weakened its capacity to respond to alternative approaches. It puts the case for a reconsideration of the underlying philosophical positions that the school wishes to affirm and suggests that a properly grounded interpretivism may serve it best. The final part of the article discusses the topics and arguments of the remaining pieces in the Special Issue.