The One Health Case Studies book is a collection of international case studies showcasing the work of One Health practitioners and their projects. The book explores current areas of One Health, grouped into themes of One Health policy, pests and pathogens, water and the environment, agriculture and food security, and education and community engagement. Looking at a range of different countries, it examines the unique projects being undertaken in Asia, Africa, Oceania, Europe, North and South America and highlights the application of a One Health approach from research conceptualization to policy development and implementation. This book provides an understanding of One Health practice globally through 28 diverse case studies. Each case study is carefully designed with clear aims, expected learning outcomes, and reflective questions to encourage academic mastery and real-world application of knowledge. The book also bridges the gap between theory and practice by offering insights into current One Health best practices, challenges, and opportunities.