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• 9-11 Commission (National Commission on Terrorist Attacks Upon the United States)
• Administration for Children and Families (ACF)
• Administration for Native Americans
• Administration on Aging (AoA)
• Administration on Developmental Disabilities
• Administrative Committee of the Federal Register
• Administrative Office of the U.S. Courts
• Advisory Council on Historic Preservation
• African Development Foundation
• Agency for Healthcare Research and Quality (AHRQ)
• Agency for International Development
• Agency for Toxic Substances and Disease Registry
• Agricultural Marketing Service
• Agricultural Research Service
• Agriculture Department (USDA)
• Air Combat Command
• Air Force
• Air Force ROTC
• Alcohol and Tobacco Tax and Trade Bureau (Treasury)
• Alcohol, Tobacco, Firearms, and Explosives Bureau (Justice)
• American Battle Monuments Commission
• AMTRAK (National Railroad Passenger Corporation)
• Animal and Plant Health Inspection Service
• Appalachian Regional Commission
• Architect of the Capitol
• Architectural and Transportation Barriers Compliance Board (Access Board)
• Archives (National Archives and Records Administration)
• Arctic Research Commission
• Armed Forces Retirement Home
• Arms Control and International Security
• Army
• Army Bands
• Army Corps of Engineers
• Army Environmental Center
• Army Recruiting
• Army Strategic Studies Institute
• Arthritis and Musculoskeletal Interagency Coordinating Committee

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