The OJJDP operates under a statutory mandate to support state, local, and tribal efforts to prevent delinquency, address youth victimization, and strengthen the juvenile justice system nationwide. In FY 2018, OJJDP awarded approximately $300 million to fund programs, research, training and technical assistance, and information dissemination that improved public safety, ensured young offenders are held appropriately accountable, and empowered youth to live productive lives. OJJDP's activities that addressed youth drug use, gang and gun violence, and missing and exploited children are described. Each chapter of this report describes OJJDP's work in the areas of delinquency prevention and intervention, special victims and violent offenders, and state relations and assistance. OJJDP also reorganized its internal structure in fiscal year 2018, so as to better support stakeholders at the state, local, and tribal levels. The reorganization brought OJJDP's Title II Formula Grants program and core protection work together under a single division. This consolidation is intended to improve communication between the two related functions and delivery of technical assistance to the field. Total funding and funding for individual programs and activities in FY 2018 are reported for the areas of youth mentoring, missing and exploited children, Victims of Child Abuse Act programs, juvenile substance abuse, youth gangs, reentry after custody periods, tribal youth, and juvenile justice system support.