The following is a list of all United States Government Departments and Agencies that start with “A”:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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AbilityOne Commission
Access Board
Administration for Children and Families (ACF)
Administration for Community Living
Administration for Native Americans
Administrative Conference of the United States
Administrative Office of the U.S. Courts
Advisory Council on Historic Preservation
African Development Foundation
Agency for Global Media
Agency for Healthcare Research and Quality (AHRQ)
Agency for International Development (USAID)
Agency for Toxic Substances and Disease Registry
Agricultural Marketing Service (AMS)
Agricultural Research Service
Agriculture Department (USDA)
Air Force
Air Force Reserve (Air Force Reserve Recruiting)
Alabama (State of)
Alaska (State of)
Alcohol and Tobacco Tax and Trade Bureau
Alcohol, Tobacco, Firearms and Explosives Bureau (ATF)
Alhurra TV (Middle East Broadcasting Networks)
American Battle Monuments Commission
American Samoa (Territory of)
AmeriCorps
Amtrak (AMTRAK)
Animal and Plant Health Inspection Service (APHIS)
Antitrust Division
Appalachian Regional Commission
Architect of the Capitol (Virtual Tour of the Capitol)
Archives, National Archives and Records Administration (NARA)
Arctic Research Commission
Arizona (State of)
Arkansas (State of)
Armed Forces Retirement Home
Arms Control and International Security
Army (Army Recruiting)
Army Corps of Engineers
Arthritis, Musculoskeletal and Skin Diseases, National Institute of