Abstract
Social contract theory enjoys a long history in moral and political philosophy. Since the European Enlightenment, social contract theory has become one of the most important traditions in moral and political philosophy. This chapter provides a brief introduction to central concepts in social contract theory and their development over time. Most importantly, the chapter clarifies some of the distinct features of new approaches to social contract theory (or “new social contract theory” for short) that have evolved in the twenty-first century and are most suitable for capturing the circumstances of contemporary societies, even if new social contract theory does not constitute a unified theoretical position but is best considered as a family of approaches, methods, and topics. The chapter also provides an overview of the contributions to this book and their connections both methodologically and thematically.