Examining the interplay between the domestic, regional and global aspects of the crisis of legitimacy of global governance, this book theoretically questions and empirically analyses the "crises of legitimacy" in global governance with respect to various mechanisms, actors, and issues. It expertly sheds lights on contemporary legitimacy contestations and crises by analysing conceptual, theoretical and empirical aspects of the legitimacy in global governance. The specific issues and case studies collected in this volume survey the evolving nature of legitimacy and legitimization processes in global governance with historical, and theoretical analysis. Perspectives on specific actors and issues provide vital insights for understanding several commonalities and differences of legitimacy crises faced at various global governance mechanisms. Improving the understanding of the strengths and weaknesses of current global governance bodies by showing several legitimacy contestations and crises at global and regional level, this book will be of great interest to scholars of international relations, globalization, international Political Economy, regionalism, and general global governance studies.