This book offers a fresh perspective on the social life of multilingualism through the lens of the important notion of linguistic citizenship. All of the chapters are underpinned by a theoretical and methodological engagement with linguistic citizenship as a useful heuristic through which to understand sociolinguistic processes in late modernity, focusing in particular on linguistic agency and voices on the margins of our societies. The authors take stock of conservative, liberal, progressive and radical social transformations in democracies in the north and south, and consider the implications for multilingualism as a resource, as a way of life and as a feature of identity politics. Each chapter builds on earlier research on linguistic citizenship by illuminating how multilingualism (in both theory and practice) should be, or could be, thought of as inclusive when we recognize what multilingual speakers do with language for voice and agency.