The Bureau of Justice Assistance (BJA) supports law enforcement, courts, corrections, treatment, victim services, technology, and prevention initiatives that strengthen the nation's criminal justice system. BJA provides leadership, services, and funding to America's communities by emphasizing local control, building relationships in the field, developing collaborations and partnerships, promoting capacity building through planning, streamlining the administration of grants, increasing training and technical assistance, creating accountability of projects, encouraging innovation, and ultimately communicating the value of justice efforts to decision-makers at every level.

The Bureau of Justice Statistics (BJS) is the primary statistical agency of the U.S. Department of Justice. BJS collects, analyzes, publishes, and disseminates information on crime, criminal offenders, victims of crime, and the operation of justice systems at all levels of government. BJS provides the President, Congress, other officials, and the public with timely, accurate, and objective data about crime and the administration of justice. In addition, BJS provides financial and technical support to state, local, and tribal governments to help them develop their criminal justice statistical capabilities. This assistance targets the development of information systems related to national criminal history records, records of protective orders involving domestic violence and stalking, sex offender registries, and automated identification systems used for background checks.

The National Institute of Justice (NIJ) is the research, development and evaluation agency of the U.S. Department of Justice and is dedicated to researching crime control and justice issues. NIJ provides objective, independent, evidence-based knowledge and tools to meet the challenges of criminal justice, particularly at state and local levels. NIJ sponsors research, development and technology assistance and also evaluates programs, policies and technologies. NIJ communicates its research and evaluation findings through conferences, reports, and the media. The Institute's major program areas include: the President's DNA initiative, Advancing Justice Through DNA Technology; the research and development of technologies to improve the safety and effectiveness of law enforcement and corrections professionals, including less lethal technologies and the development of standards and testing of ballistic resistant body armor; investigative and forensic sciences, crime control and prevention, including policing, drugs and crime; corrections, justice systems and offender behavior; violence and victimization; international crime; and social science research and evaluation.

The Office of Juvenile Justice and Delinquency Prevention (OJJDP) supports state, tribal, and community efforts to prevent and respond to juvenile delinquency and victimization. Through programs that incorporate proven prevention strategies, provide treatment and rehabilitation, and hold juvenile offenders accountable, OJJDP strives to improve the juvenile justice system so the public is better protected, and youth and their families are better served.

The Office for Victims of Crime (OVC) is committed to enhancing the nation's capacity to assist crime victims and to providing leadership in changing attitudes, policies, and practices to promote justice and healing for all crime victims. In this regard, OVC administers programs authorized by the Victims of Crime Act of 1984, as amended, and the Crime Victims Fund authorized by this statute. The fund is composed of criminal fines and penalties, special assessments, and bond forfeitures collected from convicted federal perpetrators, as well as gifts and donations received from the general public. Money deposited in the fund is used to support a wide range of activities on behalf of crime victims, including victim compensation and assistance services, training and technical assistance, and program evaluation and replication. OVC provides assistance and support to victims of crime in several areas including but not limited to the following: domestic and international terrorism, domestic violence, mass violence, identity theft, and child sexual assault.