Old immigration hubs and new ones worldwide have experienced rapid and increasing movements of people from more varied national, ethnic, linguistic, and religious backgrounds. These movements have emerged along with a diversification of migration channels and legal statuses. In concurrent but differing ways, these migration-driven trends profoundly transform societies in complex ways spanning social, demographic, cultural, economic, and political structures. Across a range of disciplines and literatures, such complex transformation processes and patterns are summarized by the concept of superdiversity. In The Oxford Handbook of Superdiversity, the editors have collated bespoke contributions that summarize and expand on research work done in light of superdiversity. The book offers unique insights into the ongoing debates about diversity and how to make sense of it considering complex social transformations. The collection is unique in providing accessible texts that highlight different disciplinary standpoints and developments and the methodological innovation superdiversity entails. The Handbook also brings together chapters that emphasize interdisciplinary case studies and examples of the social implications of superdiversity in different cities and contexts around the globe. The thirty-three chapters in this book are arranged in five sections: Disciplinary Developments; Methodological Reflections; Spaces and Scales; Power and Politics; and Conceptual Encounters. Together, these offers students, educators, researchers, and practitioners a much sought-after compendium of major advances made in studying complex transformations in light of superdiversity.