The report notes that since its establishment in 1974, the OJJDP has led the nation’s efforts to prevent and reduce delinquency, strengthen the juvenile justice system, and protect children from abuse and exploitation. During FY 2017, OJJDP’s resources have been used to assist states, communities, and tribes develop and implement strategies proven to develop a juvenile justice system that protects public safety, holds offenders accountable, and empowers youth to live productive lives. OJJDP resources have been used to support state efforts to comply with the core protections of the federal Juvenile Justice and Delinquency Prevention Act, with attention to programs that address juvenile violence, youth gangs, and delinquent behavior. Initiatives have been launched and improved to address commercial sexual exploitation, sex trafficking, and online predators. Each chapter of this report describes how OJJDP has supported research and data collection and provided technical assistance to those undertaking OJJDP initiatives. The report provides data on total and activity-specific funding in the areas of youth mentoring, missing and exploited children, victims of child abuse, tribal youth, juvenile and family drug courts, juvenile reentry after custody, juvenile justice system improvement, community violence prevention, and gang prevention.