OverviewAcademic freedom allows members of institutions of higher learning to engage in intellectual pursuits without fear of censorship or retaliation. Recent years have seen growing concerns about threats to academic freedom, which lies at the heart of the mission of the university, in light of the changing norms of (and demands on) the university. A wide range of new issues - including content warnings, safe spaces, social media controversies, microaggressions, and no platforming - have given rise to loud cries, in both scholarly and popular contexts, that academic freedom is under serious attack. Despite this, there is surprisingly little philosophical work on the topic of academic freedom, and even less that directly takes up some of these new challenges. The present volume fills both of these gaps in the current literature by bringing together leading philosophers from a wide range of areas of expertise to weigh in on both the traditional issues and timely challenges that involve academic freedom.