This book updates the recent quantitative and qualitative, empirical and theoretical literature on legitimacy, focusing on how it can be measured in diversified research environments. Highlighting the different measurements and the critique surrounding them, this volume is a coherent and systematic guide to theory on legitimacy. This book is divided into three sections: Theoretical framework Legitimacy and its measures Legitimacy International  Within these three parts, individual chapters are expected to provide in-depth analysis of core topics, including development, measurement, and cultural disparities, and collectively represent a comprehensive review of legitimacy in theory and in methodology in the global context. The book is ideal for researchers and graduate criminology and criminal justice students.