The UN’s capacity as an administrative decision-maker that affects the rights of individuals is a largely overlooked aspect of its role in international affairs. This book explores the potential for a model of administrative justice that might act as a benchmark to which global decision-makers could develop procedural standards. Applied to the UN’s internal justice, refugee status determination, NGO participation and the Security Council, the global administrative justice model is used to appraise the existing procedural protections within UN administrative decision-making.