The Routledge Handbook of Research Methods in Sport for Development and Peace serves as the first comprehensive resource dedicated to exploring the diverse methodological approaches essential for advancing research and practice in this growing interdisciplinary field. The handbook provides a dedicated and rigorous exploration of the diverse methodologies and research approaches essential for understanding and advancing this increasingly vital area of study and practice. As a comprehensive guide to the methodological landscape of inquiry within the dynamic field of Sport for Development and Peace, the book delves into the fundamental principles and practical application of research methods tailored to this unique interdisciplinary space. The book’s central objective is to provide both academics and practitioners with a state-of-the-art resource that directly addresses the critical role of rigorous methodology within the field. Accordingly, the handbook's primary themes revolve around three pillars: Epistemological Foundations, where the underlying assumptions and frameworks that shape research approaches are critically examined; Diverse Research Paradigms, exploring a spectrum of quantitative, qualitative, and mixed methods designs; and Researcher Narratives, which feature insightful accounts regarding the practical challenges of conducting research in diverse contexts. Part I addresses foundational conceptual frameworks and diverse methodological approaches employed within the field. Part II elaborates upon various research methods and associated techniques pertinent to the investigation within the Sport for Development and Peace field. Finally, Part III presents critical reflections and empirical research findings pertaining to endeavours across distinct global regions. This book is designed for researchers, students, academics and practitioners in the fields of sports studies, physical education, sport for development and peace, sport-based youth development, sport and politics, sociology of sport, sociology, anthropology, human geography, peace studies, physical education, gender and sport, and conflict resolution.