A-Z index of U.S. government departments and agencies

The U.S. Indo-Pacific Command is responsible for defending and promoting U.S. interests in the Pacific and Asia.

The Northwest Power and Conservation Council develops energy plans for the pacific northwest that include conservation efforts for local fish and wildlife.

The Office of the Pardon Attorney assists the president in the exercise of executive clemency by reviewing clemency applications and making recommendations.

The Center for Parent Information and Resources offers information for children and young people with disabilities under 22 years of age.

The Parole Commission considers prisoners' applications for parole, deciding whether or not a prisoner has earned a chance to reintegrate into the community.

Contact the National Passport Information Center for information on U.S. passports. Check the status of a pending application. Find the locations of more than 4,500 passport acceptance facilities. And learn how to get a passport in an emergency.

The U.S. Patent and Trademark Office is the agency responsible for granting U.S. patents and registering trademarks.

Peace Corps volunteers travel to developing countries all over the world to assist with many ongoing efforts including AIDS education, business training, and information infrastructure development.

The Pension Benefit Guaranty Corporation insures and guarantees private sector workers' pensions.

The Pentagon Force Protection Agency is a civilian agency that protects the occupants, visitors, and infrastructure of Pentagon facilities.

The Pipeline and Hazardous Materials Safety Administration regulates the transport of hazardous materials.

The Office of Policy Development and Research provides the Department of Housing and Urban Development up-to-date information and analysis of housing and community development issues.

The Department of State Undersecretary for Political Affairs manages overall regional and bilateral policy issues, and oversees the bureaus for Africa, East Asia and the Pacific, Europe and Eurasia, the Near East, South and Central Asia, the Western Hemisphere, and International Organizations.

The U.S. Postal Inspection Service supports and protects the U.S. Postal Service and its customers by enforcing the laws that defend the nation’s mail system from illegal or dangerous use.

The Postal Regulatory Commission is responsible for oversight of the U.S. Postal Service, including oversight of rates and services, and ensuring the Postal Service meets all of its legal requirements.

The Postal Service provides mail processing and delivery services to individuals and businesses in the U.S.

The Office of Postsecondary Education develops programs to increase access to postsecondary education. This office works with state accreditation agencies to recognize institutions of higher learning that provide quality education.

There are four power administrations that market the hydroelectric power produced by the Army Corps of Engineers' dams.

The President's Council on Fitness educates and encourages Americans to adopt a healthy lifestyle.

The Commission on Presidential Scholars selects and honors the Presidential Scholars, a group of graduating high school seniors of exceptional talent and commitment to public service.

The Presidio Trust preserves the Presidio National Park as an enduring resource for the American people.

The Pretrial Services Agency for the District of Columbia's promotes pretrial justice and enhances community safety.

The CDC National Prevention Information Network (NPIN) is the reference and referral service for information on HIV/AIDS, viral hepatitis, sexually transmitted diseases (STDs), and tuberculosis (TB).

The Privacy and Civil Liberties Oversight Board ensures that the federal government’s efforts to prevent terrorism are balanced with the need to protect privacy and civil liberties.​

The Office of Public and Indian Housing works to ensure safe, decent and affordable housing.

Public Diplomacy and Public Affairs enhances national security by expanding and strengthening the relationship between the people and Government of the United States and citizens of the rest of the world.