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

U.S. Capitol Police Officers work to protect life and property, investigate criminal acts, and enforce traffic regulations on U.S. Capitol Grounds. Officers are also responsible for protecting members, officers of Congress, and their families.

Take a tour of the historic Capitol, where you can see the Crypt of the Capitol, the Rotunda, and National Statuary Hall.

The Office of Career, Technical, and Adult Education administers and coordinates programs that are related to adult education and literacy, career and technical education, and community colleges.

The U.S. Census Bureau provides data about the nation's people and economy.

The Center provides services to consumers and industry groups about food and cosmetics. They perform scientific analysis, develop policy, and handle critical issues related to food and cosmetics.

The Center for Nutrition Policy and Promotion works to improve the health and well-being of Americans by developing and promoting dietary guidance that links scientific research to the nutrition needs of consumers.

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

The Centers for Disease Control and Prevention (CDC) collaborates to create the expertise, information, and tools that people and communities need to protect their health through health promotion, prevention of disease, injury and disability, and preparedness for new health threats.

The Centers for Medicare and Medicaid Services (CMS) provides health coverage to more than 100 million people through Medicare, Medicaid, the Children’s Health Insurance Program, and the Health Insurance Marketplace. The CMS seeks to strengthen and modernize the Nation’s health care system, to provide access to high quality care and improved health at lower costs.

The Central Command is responsible for defending and promoting U.S. interests in 20 nations in the Middle East, Central and South Asia, and the strategic waterways that surround them.

The Central Intelligence Agency (CIA) collects, evaluates, and disseminates vital information on economic, military, political, scientific, and other developments abroad to safeguard national security.

The Chemical Safety Board investigates industrial chemical accidents.

The Chief Acquisition Officers Council monitors and improves the federal acquisition system.

The Chief Financial Officers Council works to improve financial management in the U.S. government.

The Chief Human Capital Officers Council works to modernize human resources systems, improve the quality of human resources information, and advises on legislation affecting human resources operations.

The CIO Council is the principal interagency forum on Federal agency practices for information technology management.

The Office of Child Support Enforcement assures that support (both financial and medical) is available to children through locating parents, establishing paternity, identifying support obligations, and enforcing those obligations.

The U.S. Courts of Appeal hear appeals from lower courts of both civil and criminal trials, but do not investigate the facts of a case. Rather, the Appeals Courts investigate whether or not the law has been fairly and correctly applied by the lower courts.

The Citizens' Stamp Advisory Committee evaluates all stamp proposals. The Committee's primary goal is to select subjects of broad national interest for recommendation to the Postmaster General that are both interesting and educational.

The U.S. Citizenship and Immigration Services is responsible for processing immigration and naturalization applications and establishing policies regarding immigration services.

The Civil Rights Division is responsible for enforcing federal statutes that prohibit discrimination based on race, color, religion, sex, disability or national origin.

This office works to ensure equal access to education, and resolve complaints of discrimination.

The Office for Civil Rights helps to protect you from discrimination in certain healthcare and social service programs.

The U.S. Coast Guard safeguards the maritime interests of the United States and the environment around the world.

The College of Information and Cyberspace (NDU) offers military and civilian learners educational opportunities in the fields of information technology and cyber security.

The Department of Commerce works with businesses, universities, communities, and the Nation’s workers to promote job creation, economic growth, sustainable development, and improved standards of living for Americans.

The U. S. Commission of Fine Arts advises the government on matters pertaining to the arts, and to guide the architectural development of Washington.

The U.S. Commission on Civil Rights is an independent, bipartisan agency charged with monitoring federal civil rights enforcement.

The U.S. Commission on International Religious Freedom reviews the facts and circumstances of violations of religious freedom internationally and to make policy recommendations to the President, the Secretary of State and Congress.

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 Commission on Security and Cooperation in Europe monitors and encourages compliance with the Helsinki Final Act and other Organization for Security and Co-operation in Europe commitments.

The Committee for the Implementation of Textile Agreements works on textile trade policy, and textile trade agreements.

The Committee on Foreign Investment in the United States reviews transactions that could result in control of a U.S. business by a foreign person.

The Commodity Futures Trading Commission protects the public from fraud, manipulation, and abusive practices related to the sale of commodity and financial futures and options, and to fosters open, competitive, and financially sound futures and option markets. They investigate and prosecute commodities fraud, including foreign currency schemes, energy manipulation and hedge fund fraud, and works with other federal and state agencies to bring criminal and other actions.

The Office of Community Oriented Policing Services advances the practice of community policing through sharing information and making grants to police departments in the United States.

The Office of Community Planning and Development develops communities by promoting decent housing, suitable living environments, and expanded economic opportunities for low and moderate income people.

The Office of the Comptroller of the Currency charters, regulates, and supervises all national banks. It also supervises the federal branches and agencies of foreign banks.

The U.S. House of Representatives and the U.S. Senate make up the two chambers of Congress. The House has 435 members, the number representing each state is determined by population.

The U.S. Senate and the U.S. House of Representatives make up the two chambers of Congress. The Senate has 100 members, two from each state, who are elected to serve for a term of six years.

The Congressional Budget Office produces independent, nonpartisan, analysis of economic and budgetary issues to support the Congressional budget process.

The Congressional Office for International Leadership engages members of Congress and their constituents in congressional and citizen diplomacy with political and civic leaders from around the globe. COIL achieves this through the Open World program, a ten-day professional exchange dedicated to strengthening mutual understanding and sharing best practices in accountable governance, civil society, private sector, and the rule of law.

The Congressional Research Service serves the Congress throughout the legislative process by providing comprehensive and reliable legislative research and analysis that are timely, objective, authoritative, and confidential, thereby contributing to an informed national legislature.

The Office of Congressional Workplace Rights advances workplace rights, safety, health, and accessibility in the Legislative Branch.

The Bureau of Consular Affairs provides passport services to U.S. citizens, issues Visas to enter the U.S., manages the Diversity Visa Lottery, and provides services to U.S. citizens abroad.

The Consumer Financial Protection Bureau helps consumers by providing educational materials and accepting complaints. It supervises banks, lenders, and large non-bank entities, such as credit reporting agencies and debt collection companies. The Bureau also works to make credit card, mortgage, and other loan disclosures clearer, so consumers can understand their rights and responsibilities.

The Consumer Product Safety Commission (CPSC) protects the public from unreasonable risks of serious injury or death from thousands of types of consumer products under its jurisdiction, including products that pose a fire, electrical, chemical, or mechanical hazard or can injure children.

The Coordinating Council on Juvenile Justice and Delinquency Prevention coordinates, studies the effectiveness of, and makes recommendations on juvenile crime prevention activities.

The Copyright Office administers the national copyright system and provides advice on copyright law to congress, federal agencies, the courts and the public.

The Army Corps of Engineers provides public engineering services in peace and war to strengthen national security, energize the economy, and reduce risks from disasters.

The Council of Economic Advisers gives the president advice on domestic and international economic policy.

The Council of the Inspectors General on Integrity and Efficiency address integrity, economy, and effectiveness issues in the federal government.

The Council on Environmental Quality coordinates federal environmental activities, and the development of environmental policy.

The Court of Appeals for the Armed Forces is an appeals court with worldwide jurisdiction for anyone subject to the Uniform Code of Military Justice.

With a national jurisdiction, the Court of Appeals for the Federal Circuit hears appeals on patent and certain civil cases from courts such as the U.S. Court of International Trade and the Court of Federal Claims, among others. The Court of Appeals for the Federal Circuit may also review the administrative rulings of the Patent and Trademark Office, the Secretary of Commerce and other agencies.

The Court of Appeals for Veterans Claims hears appeals of decisions made by the Board of Veterans Appeals. You must have a decision from the Board of Veterans Appeals to bring a case before this court.

The U.S. Court of Federal Claims has jurisdiction over claims seeking money judgments against the United States.

The United States Court of International Trade resolves trade disputes by interpreting and applying customs and international trade laws.

The Court Services and Offender Supervision Agency provides supervision of adults on parole, probation, and supervised release in the District of Columbia.

Customs and Border Protection prevents people from entering the country illegally, or bringing anything harmful or illegal into the United States.

The U.S. Cyber Command coordinates cyberspace operations to defend U.S. interests.

The Cybersecurity and Infrastructure Security Agency (CISA) defends critical infrastructure against threats.