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.
D
The Debt and Claims Management Center collects or settles delinquent debts for the Department of Defense by former military members and civilian employees.
Phone number:
1-317-212-8039
The Defense Acquisition University provides ongoing technology, logistics, and acquisitions training to military personnel.
Website:
Phone number:
1-703-805-3459
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The Defense Advanced Research Projects Agency serves as the central research and development organization of the Department of Defense.
Phone number:
1-703-526-6630
The Defense Commissary Agency provides a worldwide network of commissaries that sell groceries and household supplies at low cost to members of the Armed Services.
Website:
Phone number:
804-734-8000
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The Defense Contract Audit Agency audits U.S. Department of Defense contracts.
Website:
Phone number:
1-703-767-3265
The Defense Contract Management Agency is responsible for contract management for the Department of Defense, the National Aeronautics and Space Administration, and several other federal, state, foreign and international governments and agencies. Its goal is to ensure contracts are fulfilled on time and at the correct cost.
Website:
Phone number:
1-804-734-0628
The Defense Counterintelligence and Security Agency provides industrial security engagement and counterintelligence support to secure the trustworthiness of the U.S. government's workforce, contract support, technologies, services, and supply chains.
Phone number:
571-305-6562
The Department of Defense provides the military forces needed to deter war, and to protect the security of the United States.
Website:
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The Defense Finance and Accounting Service oversees payments to Department of Defense servicemembers, employees, vendors and contractors. The Defense Finance and Accounting Services also provides Department of Defense decision makers with business intelligence, finance and accounting information.
Phone number:
1-888-332-7411
The Debt and Claims Management Center collects or settles delinquent debts for the Department of Defense by former military members and civilian employees.
Phone number:
1-317-212-8039
The Defense Health Agency supports uniformed services health care, including the TRICARE health plan.
Website:
Contact:
The Defense Information Systems Agency provides a global infrastructure for information sharing and communication across the Department of Defense, from the President on down.
Website:
The Defense Intelligence Agency provides defense intelligence to war fighters, planners, and policy makers.
Website:
Phone number:
1-202-231-5554
The Defense Legal Services Agency provides legal advice and services to various components of the Department of Defense. It also administers programs governing military standards of conduct.
Website:
Phone number:
1-703-695-3341
The Defense Logistics Agency provides logistical, acquisition, and technical support for the Army, Navy, Air Force, Marine Corps and other federal agencies and allies.
Website:
Phone number:
1-269-961-7766
Contact:
The Defense Nuclear Facilities Safety Board reviews the content and implementation of health and safety standards at Department of Energy Defense Nuclear Facilities. The board also makes recommendations to the President and Secretary of Energy regarding health and safety issues at Defense Nuclear Facilities.
Phone number:
1-202-694-7000
The Department of Defense's Defense POW/MIA Accounting Agency works to recover service members who became missing during their service.
Website:
Phone number:
1-703-699-1420
The Defense Security Cooperation Agency supports U.S. national security and foreign policy interests. They train, educate, advise, and equip foreign security forces to respond to shared challenges.
Phone number:
1-703-697-9709
The Defense Technical Information Center serves the Department of Defense as a repository of government funded scientific, technical, engineering and business related information.
Phone number:
1-703-767-8274
The Defense Threat Reduction Agency is a combat support agency whose goal is to reduce the threat posed by weapons of mass destruction.
Phone number:
1-703-767-5870
In 1961, the federal government and the governments of Delaware, New Jersey, Pennsylvania, and New York, entered into an agreement that created the Delaware River Basin Commission. The Commission has the independent legal authority to oversee and manage the Delaware River Basin.
Website:
Phone number:
1-609-883-9500
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The Delta Regional Authority is a partnership to improve economic and community growth in eight states. Those states are Alabama, Arkansas, Illinois, Kentucky, Louisiana, Mississippi, Missouri, and Tennessee.
Website:
Phone number:
1-202-434-4870
Contact:
The Denali Commission provides critical utilities, infrastructure, and economic support throughout Alaska.
Website:
Phone number:
1-907-271-1414
Contact:
The Department of Agriculture provides leadership on food, agriculture, natural resources, and related issues.
Phone number:
1-202-720-2791
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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.
Website:
Phone number:
1-202-482-2000
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The Department of Defense provides the military forces needed to deter war, and to protect the security of the United States.
Website:
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The Department of Education fosters educational excellence, and to ensures equal access to educational opportunity for all.
Website:
Contact:
The Department of Energy manages the United States' nuclear infrastructure and administers the country's energy policy. The Department of Energy also funds scientific research in the field.
Website:
Phone number:
1-202-586-5000
Contact:
The Department of Health and Human Services protects the health of all Americans and provides essential human services.
The Department of Homeland Security works to improve the security of the United States. The Department's work includes customs, border, and immigration enforcement, emergency response to natural and manmade disasters, antiterrorism work, and cybersecurity.
Phone number:
1-202-282-8000
The Department of Housing and Urban Development administers programs that provide housing and community development assistance. The Department also works to ensure fair and equal housing opportunity for all.
Phone number:
1-202-708-1112
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The Department of Justice enforces federal laws, seeks just punishment for the guilty, and ensures the fair and impartial administration of justice.
Website:
Phone number:
1-202-514-2000
Contact:
The Department of Labor administers federal labor laws to guarantee workers' rights to fair, safe, and healthy working conditions, including minimum hourly wage and overtime pay, protection against employment discrimination, and unemployment insurance.
Website:
Contact:
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The Department of State advises the President and leads the nation in foreign policy issues. The State Department negotiates treaties and agreements with foreign entities, and represents the United States at the United Nations.
Website:
Phone number:
1-202-647-4000
Contact:
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The Department of the Interior manages public lands and minerals, national parks, and wildlife refuges and upholds Federal trust responsibilities to Indian tribes and Native Alaskans. Additionally, Interior is responsible for endangered species conservation and other environmental conservation efforts.
Website:
Phone number:
1-202-208-3100
The Department of the Treasury manages federal finances by collecting taxes and paying bills and by managing currency, government accounts and public debt. The Department of the Treasury also enforces finance and tax laws.
Website:
Phone number:
1-202-622-2000
The Department of Transportation is responsible for planning and coordinating federal transportation projects. It also sets safety regulations for all major modes of transportation.
Website:
Phone number:
1-202-366-4000
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The Department of Veterans Affairs runs programs benefiting veterans and members of their families. It offers education opportunities and rehabilitation services and provides compensation payments for disabilities or death related to military service, home loan guaranties, pensions, burials, and health care that includes the services of nursing homes, clinics, and medical centers.
Website:
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The Office of the Director of National Intelligence (ODNI) integrates the intelligence gathering and analysis functions performed across the intelligence community to provide intelligence to decision makers.
Phone number:
1-703-275-3807
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 Drug Enforcement Administration enforces the United States' controlled substance laws and regulations and aims to reduce the supply of and demand for such substances.
Website:
Phone number:
1-202-307-1000
The Eisenhower School provides military and civilian students education in strategy and resource management. It was formerly known as the Industrial College of the Armed Forces.
Phone number:
1-202-685-4333
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