This book offers the first comprehensive account of Anticorruption Public Diplomacy, presenting an original framework to explain how states construct, negotiate, and project integrity through public diplomacy as part of their international identity. It positions anticorruption as a key dimension of foreign policy and a strategic resource in the global competition for legitimacy, trust, and influence, redefining the exercise of power and credibility in contemporary international affairs. Grounded in an interpretivist&constructivist approach, it conceptualises Anticorruption Public Diplomacy as a multidimensional process of international socialisation linking ethical values, interests, and identity. An innovative analytical matrix is developed and applied to comparative case studies of Denmark, New Zealand, the United States, and South Korea, revealing how anticorruption norms are shaped, diffused, and internalised across different contexts, offering original insights into the global dynamics of integrity governance. This volume shows how ethical norms evolve into instruments of power in world politics, making it essential reading for scholars and practitioners alike.