This handbook brings together the knowledge on juvenile imprisonment to develop a global, synthesized view of the impact of imprisonment on children and young people. There are a growing number of scholars around the world who have conducted in-depth, qualitative research inside of youth prisons, and about young people incarcerated in adult prisons, and yet this research has never been synthesized or compiled. This book is organized around several core themes including: conditions of confinement, relationships in confinement, gender/sexuality and identity, perspectives on juvenile facility staff, reentry from youth prisons, young people’s experiences in adult prisons, and new models and perspectives on juvenile imprisonment. This handbook seeks to educate students, scholars, and policymakers about the role of incarceration in young people’s lives, from an empirically-informed, critical, and global perspective.