Book excerpt: This book takes a global perspective to address the concept of belonging in youth studies, interrogating its emergence as a reoccurring theme in the literature and elucidating its benefits and shortcomings. While belonging offers new alignments across previously divergent approaches to youth studies, its pervasiveness in the field has led to criticism that it means both everything and nothing and thus requires deeper analysis to be of enduring value. The authors do this work to provide an accessible, scholarly account of how youth studies uses belonging by focusing on transitions, participation, citizenship and mobility to address its theoretical and historical underpinnings and its prevalence in youth policy and research.