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

Find contact information for U.S. federal government departments and agencies including websites, emails, phone numbers, addresses, and more.


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The Oak Ridge National Laboratory conducts world-leading research in advanced materials exploration, alternative fuels, clean energy, and supercomputing.

Phone number: 

1-865-576-0885

The Occupational Safety and Health Administration (OSHA) assures safe and healthful working conditions by setting and enforcing standards, and by providing training, outreach, education and assistance.

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The Occupational Safety and Health Review Commission hears trials and appeals, deciding contests of citations or penalties that result from inspections performed by the Occupational Safety and Health Administration.

The Bureau of Ocean Energy Management promotes energy independence, environmental protection, and economic development by managing offshore energy resources.

Phone number: 

1-202-208-6474

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

Phone number: 

1-202-245-6700

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

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.

Phone number: 

1-202-245-7700

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.

Phone number: 

1-202-401-9373

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.

Phone number: 

1-202-708-1112

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

Phone number: 

1-202-724-9250

The Office of Cuba Broadcasting provides the Cuban people with news and information.

The Office of Disability Employment Policy creates policies to ensure that people with disabilities are fully integrated in the workforce.

Phone number: 

1-202-693-7880

The Office of Elementary and Secondary Education works to improve the achievement of students in preschool through secondary school. The office also works to ensure equal education opportunities for all, and to provide assistance to state and local schools.

Phone number: 

1-202-401-0113

The Office of Environmental Management cleans up nuclear weapons test sites and government sponsored nuclear energy research sites.

Phone number: 

1-202-586-7709

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The Office of Fair Housing and Equal Opportunity enforces federal laws and establishes policies to ensure that all Americans have equal access to the housing of their choice.

Phone number: 

1-202-708-1112

The Office of Fossil Energy is responsible for research and development of programs involving coal, petroleum, and natural gas.

Phone number: 

1-202-586-6660

The Office of Government Ethics provides oversight, policy, and guidance to the Executive Branch regarding ethics laws and policies.

Phone number: 

1-202-482-9300

The Office of Housing regulates the housing industry and administers the Federal Housing Administration. The regulatory programs administered by the Office of Housing include single family housing and multifamily housing programs.

Website: 

Office of Housing

The Immigrant and Employee Rights Section is responsible for protecting immigrants authorized to work in the U.S. against employment discrimination.

The Office of Investor Education and Advocacy serves individual investors and is ready to assist you in resolving your complaints and answering questions.

The Office of Justice Programs is a research and grant-making organization that works to provide local and state law enforcement agencies with information, training, coordination, and innovative strategies for dealing with the most pressing law enforcement issues.

Phone number: 

1-202-307-0627

The Office of Juvenile Justice and Delinquency Prevention sponsors research, programs and training initiatives in an effort to strengthen the juvenile justice system and serve at risk youth and their families.

Phone number: 

1-202-307-5911

The Office of Lead Hazard Control and Healthy Homes works to make private homes safe from lead and other harmful materials.

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The Office of Local Defense Community Cooperation helps states and communities adjust to major changes related local Department of Defense activities and installations.

Phone number: 

1-703-697-2130

The Office of Management and Budget oversees the performance of federal agencies, and administers the federal budget.

Phone number: 

1-202-395-3080

The Manufactured Housing Program is a consumer protection program that regulates the construction of certain factory-built housing units called "manufactured homes".

Phone number: 

1-202-708-1112

The Office of Minority Health improves the health of racial and ethnic minority populations through the development of health policies and programs.

Phone number: 

1-240-453-2882

The Office of National Drug Control Policy advises the president on drug-control issues.

The Office of Natural Resources Revenue manages the revenues from energy and mineral leases for the use of public natural resources on the Outer Continental Shelf and onshore Federal and American Indian lands.

Phone number: 

1-202-513-0600

The Office of Nuclear Energy works to improve the safety, cost, security, and efficiency of nuclear energy generation.

Phone number: 

1-202-586-5000

The Office of Personnel Management manages the civil service of the federal government, coordinates recruiting of new government employees, and manages their health insurance and retirement benefits programs. They also provide resources for locating student jobs, summer jobs, scholarships, and internships.

Phone number: 

1-202-606-1800

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 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.

Phone number: 

1- 202-502-7750

The Office of Refugee Resettlement provides resources for refugees, asylum seekers, and other new arrivals to the U.S. to assist with their integration into their new community.

Phone number: 

1-202-401-9246

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The Office of Science and Technology Policy advises the president on the effects of science and technology on domestic and international affairs.

Phone number: 

1-202-456-4444

The Office of Scientific and Technical Information collects, preserves, and makes available the results of research and development carried out or sponsored by the Department of Energy.

Phone number: 

1-865-576-1188

The Office of Servicemember Affairs addresses consumer financial challenges affecting military members, veterans, and their families.

The Office of Special Counsel is an investigative and prosecutorial office that works to end government and political corruption, and to protect government employees and whistleblowers.

Phone number: 

1-202-804-7000

The Office of Special Education and Rehabilitative Services provides a wide array of supports to parents, students, school districts, and states in three main areas: special education, vocational rehabilitation, and research.

Phone number: 

1-202-245-7468

The Office of Surface Mining, Reclamation and Enforcement protects populations and the environment during surface coal mining operations. The Office also works to clean and put to good use abandoned mine sites. These missions are accomplished primarily through regulation and oversight of state programs.

Phone number: 

1-202-208-2565

The Office of the Assistant Secretary for Research and Technology coordinates the Department of Transportation's research initiatives and deploys new technologies.

Phone number: 

1-202-366-3282

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.

Phone number: 

1-202-649-6800

The Office of the Director of National Intelligence integrates the intelligence gathering and analysis functions performed across the intelligence community to provide intelligence to decision makers.

Phone number: 

1-703-733-8600

The Office of the Federal Register oversees the Federal Register publication system, making available the full text of federal laws and regulations, presidential documents, and other federal program information.

Phone number: 

1-202-741‐6000

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

Phone number: 

1-202-616-6070

The Office on Violence Against Women reduces violence against women. They help victims of domestic violence, dating violence, sexual assault, and stalking.

If you are in immediate danger, call 911.

Phone number: 

1-202-307-6026

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