In this issue of Pediatric Clinics of North America, guest editors Drs. Elizabeth Barnert, David Keller, and Michael DeBaun bring their considerable expertise to the topic of Health of Youth in the Carceral System. Top experts examine the health of youth in the juvenile legal system, adult criminal legal system, and immigration detention system, as well as the impact of adult carceral involvement on families, including newborns and young children. By providing a broad view of health, addressing the carceral system's historical and racist roots, and considering suggested policy reforms along with the voices of families and providers in the system, this issue provides a better understanding of this complex topic-not only for pediatricians practicing behind bars but also for community providers and researchers seeking to advance health equity.