This edited volume explores how different lives, experiences and forms of political action might be engendered when subjects are excluded, made vulnerable and invisible from contemporary forms of citizenship. It investigates how complex forms of marginality are not only produced by dominant forms of citizenship but also actively challenge them. By bringing together diverse theoretical and empirical contributions, and exploring the emergent politics of marginalised subjects, this book challenges how we think about citizenship and opens up space for alternative imaginaries of political action and belonging. It was originally published as a special issue of Citizenship Studies.