LibGuides: GovSpeak: A Guide to U.S. Government Acronyms & Abbreviations: A

18F	1800 F Street (unable to verify 3/25)
21CCF	21st Century Customs Framework
21CW	Office of the 21st Century Workforce (unable to verify)
21MP	21st Century Museum Professionals Program
3CT	Climate Change Communication Toolkit
3DEP	3D Elevation Program
3DHP	3D National Hydrography Program
3DMAGGS	Three-Dimensional Multi-block Advanced Grid Generation System
3DNTM	3D National Topography Model
3PK9-C	Third-Party Canine-Cargo program
3P-RD	Physician and Physician Practice Research Database
3Ts	Training, Testing, and Taking Action
7-SEAS	Seven SouthEast Asian Studies (unable to verify 3/25)
A2e	Atmosphere to Electrons
A&LS	Accessibility & Language Services Division
AAA	Archives of American Art
AAB	Agency Assistance Branch
AABS	Annual Arts Basic Survey (unable to verify 10/20)
AAD	Access to Archival Databases
AADAP	Aquatic Animal Drug Approval Partnership
AAEP	Adaptation Action and Evaluation Plan
AAG	Assistant Attorney General (select office of interest to locate AAG)
AAHC	Museum Grants for African American History and Culture
AAI	Argonne Accelerator Institute
AAM	Advanced Air Mobility \| Office of Aerospace Medicine
AAO	Administrative Appeals Office
AAP	Accelerated and Advance Payment \| Advance Acquisition Plan (unable to verify 10/20)
AAPC	Accounting and Auditing Policy Committee (changed to ASIC)
AAPI	Initiative on Asian Americans and Pacific Islanders (unable to verify 2/21)
AAPs	Affirmative Action Programs (unable to verify 2/25)
AAQTF	Agricultural Air Quality Task Force
AARO	All-domain Anomaly Resolution Office
AAS	Office of Airport Safety and Standards
AAVP	Advanced Air Vehicles Program
AAWQ	Animal Agriculture and Water Quality subcommittee
AAWU	Alaska Aviation Weather Unit

ABA	Acquisitions and Bibliographic Access Directorate
ABADRU	Arthropod-borne Animal Disease Research Unit
ABAWDS	Able-Bodied Adults Without Dependents
ABC	At Risk Individuals, Behavioral Health, and Community Resilience (unable to verify 4/23)
ABCC	Advanced Biomedical Computing Center (changed to ABCS)
ABCD	Adolescent Brain Cognitive Development Study
ABCs	Active Bacterial Core surveillance
ABCS	Advanced Biomedical Computational Science
ABES	Adolescent Behaviors and Experiences Survey
ABI	Automated Broker Interface
ABIC	Agriculture Business Innovation Center
ABIS	Automated Biometric Identification System
ABL	Applied Bioscience Laboratory
ABLES	Adult Blood Lead Epidemiology & Surveillance
ABMC	American Battle Monuments Commission
ABML	Asphalt Binder and Mixtures Laboratory (unable to verify 3/25)
ABOR	AbilityOne Representative
ABPP	American Battlefield Protection Program \| Authorized Bulk Purchase Program
ABS	Annual Business Survey

AC	Accessible Communications Program \| Animal Care
AC4	Atmospheric Chemistry, Carbon Cycle, & Climate
ACA	Affordable Care Act \| Atrocity Crimes Advisory Group (unable to verify 2/25)
ACAS	Air Cargo Advance Screening
ACBFR	Advisory Committee on Beginning Farmers and Ranchers
ACBS	Asthma Call-back Survey
ACC	American Climate Corps (unable to verify 2/25) \| Assistance to Coal Communities
ACCE	Airborne Cloud Computing Environment (unable to verify 2/21)
ACCESS	Advancing Collaborative Connections for Earth System Science \| Advancing Communities through Credit, Education, Stability and Support \| Argonne Collaborative Center for Energy Storage Science
ACCLPP	Advisory Committee on Childhood Lead Poisoning Prevention
ACCP	Atmospheric Composition & Chemical Processes
ACCSH	Advisory Committee on Construction Safety and Health
ACCV	Advisory Commission on Childhood Vaccines
ACD	Advanced Counterfeit Deterrence \| Advisory Committee to the Director \| Applied Cybersecurity Division
ACDBE	Airport Concession Disadvantaged Business Enterprise
ACDDE	Advisory Committee on Diversity and Digital Empowerment (changed to CEDC)
ACDEB	Advisory Committee on Data for Evidence Building
A.C.E.	Accuracy and Coverage Evaluation
ACE	Academic Center of Excellence (changed to YVPCs) \| Adjudication, Compliance, and Equity Division \| Advanced Composition Explorer \| Adverse Childhood Experiences \| Aerosols, Clouds, Ecosystems (unable to verify 5/20) \| Affordable Clean Energy \| Air, Climate, and Energy Program \| America's Children and the Environment \| Americas Competitiveness Exchange \| Anti-Monopoly and Collusion Enforcement Section \| Assess Costs Everywhere (unable to verify 2/25) \| Assessment of Chemical Exposures Program \| Automated Commercial Environment
ACEC	Areas of Critical Environmental Concern
ACE-CH	Alliance for Community Engagement on Climate and Health (unable to verify 2/25)
ACEP	Agricultural Conservation Easement Program
ACES	Active Community Environments Initiative (unable to verify) \| Annual Capital Expenditures Survey
ACESD	Atlantic Coastal Environmental Sciences Division
ACET	Automated Cybersecurity Evaluation Toolbox
ACF	Administration for Children and Families \| Aerial Cable Facility \| Analytical Control Facility
ACFR	Administrative Committee of the Federal Register
ACFRC	Advisory Committee on Family Residential Centers (unable to verify 2/21)
ACH	Automated Clearing House \| Automated Clearinghouse
ACHP	Advisory Council on Historic Preservation

ACI	Advanced Cyberinfrastructure (changed to OAC)
ACIP	Advisory Committee on Immunization Practices
ACIR	Agricultural Commodity Import Requirements
ACIS	Animal Care Information System (unavailable as of 8/16) \| Automated Case Information System
ACL	Administration for Community Living \| Analytical Chemistry Laboratory (unable to verify 12/17)
ACM$	Award Cash Management $ervice
ACMAP	Atmospheric Composition Modeling and Analysis Program
ACMD	Applied and Computational Mathematics Division \| Applied Chemicals and Materials Division
ACME	Advanced Combustion via Microgravity Experiments
ACMF	Advisory Committee on Minority Farmers
ACMH	Advisory Committee on Minority Health
ACMUI	Advisory Committee on the Medical Uses of Isotopes
ACNS	Advisory Committee for Nuclear Security
ACO	Aircraft Certification Office (changed to Certification Branches)
ACO REACH	Accountable Care Organization Realizing Equity, Access, and Community Health
ACORN	Accelerator Controls Operations Research Network
ACOSS	Animal Contact Outbreak Surveillance System
ACP	Affordable Connectivity Program
ACPAC	Aviation Consumer Protection Advisory Committee
ACPD	Advisory Commission on Public Diplomacy \| Aviation Consumer Protection Division
ACPF	Agricultural Conservation Planning Framework
AcqNet	Acquisition Central
ACRES	Assessment, Cleanup and Redevelopment Exchange System
ACRGP	Airport Coronavirus Response Grant Program
ACRP	Airport Cooperative Research Program
ACRR	Annular Core Research Reactor facility
ACRS	Advisory Committee on Reactor Safeguards \| Air Quality and Community Health Research Subcommittee
ACRSI	Acreage Crop Reporting Streamlining Initiative
ACS	American Community Survey \| Automated Collection System \| Office of American Citizens Services and Crisis Management (unable to verify 6/20)
ACS-ED	American Community Survey Education Tabulation
ACSFA	Advisory Committee on Student Financial Assistance (defunct)
ACSL	Adaptive Cropping Systems Laboratory
ACSNCA	Advisory Committee for the Sustained National Climate Assessment (also, SNCAFAC; defunct 8/17)
ACT-America	Atmospheric Carbon and Transport - America
ACTION II	Accelerating Change and Transformation in Organizations and Networks II
ACTIV	Accelerating COVID-19 Therapeutic Interventions and Vaccines (page archived 1/25)
ACTIVATE	Aerosol Cloud meTeorology Interactions oVer the western ATlantic Experiment
ACTIV TRACE	ACTIV Tracking Resistance and Coronavirus Evolution (page archived 1/25)
ACToR	Aggregated Computational Toxicology Online Resource (retired)
ACTR	Air Travel Consumer Reports
ACTVS	Automated Cryptographic Validation Testing System
ACU	Animal Care and Use (changed to OACU)
ACUS	Administrative Conference of the United States
ACVFA	Advisory Committee On Voluntary Foreign Aid (unable to verify 2/25)
ACVP	AIDS and Cancer Virus Program
ACWI	Advisory Committee on Water Information (inactive as of 12/19)
ACWS	Advisory Committee for Women's Services
ACWV	Advisory Committee on Women Veterans
ACYF	Administration on Children, Youth, and Families

AD	Airworthiness Directive \| Auctions Division
ADA	Americans with Disabilities Act (Text of ADA legislation)
ADAC	Arctic Domain Awareness Center
ADAMS	Agencywide Documents Access and Management System
ADAPT	ADvanced Analysis for Precision cancer Therapy
ADAT	Advanced Data Access Tool
ADB	Assimilation Development Branch (unable to verify 11/23)
ADC	Program Against Digital Counterfeiting of Currency (changed to ACD)
ADCB	Accelerated Disease Control Branch
AD/CVD	Antidumping and Countervailing Duties
ADD	Administration on Developmental Disabilities (changed to AIDD)
ADDM	Autism and Developmental Disabilities Monitoring Network
ADDS	Aviation Digital Data Service
ADEAR	Alzheimer's Disease Education and Referral Center
ADEPP	Aging and Disability Evidence-Based Programs and Practices
ADF	African Development Foundation
ADHS	Appalachian Development Highway System
ADI	Applicability Determination Index
ADIOS	Automated Data Inquiry for Oil Spills
ADIP	Airport Data and Information Portal
ADL	Accelerated Discovery Laboratory \| Advanced Distributed Learning
ADMA	Associate Director for Military Affairs (unable to verify)
ADMG	Airborne Data Management Group
ADMS	Advanced Distribution Management System Program (unable to verify 9/24)
ADOPT	Automotive Deployment Options Projection Tool
ADPI	Alzheimer’s Disease Programs Initiative
ADR	Interagency Alternative Dispute Resolution Working Group (unable to verify 3/25)
ADRCs	Aging and Disability Resource Centers
ADRO	Alternative Dispute Resolution Office
ADS	Astrophysics Data System \| Automated Directives System (unable to verify 2/25) \| Bureau of Arms Control, Deterrence, and Stability
ADS-B	Automatic Dependent Surveillance-Broadcast
AdSci	Adaptation Sciences Program
ADTF	Accelerator Development & Test Facility
ADVANce	Accelerating the Development of Veterinary and Animal Needs
AEAP	Antiterrorism and Emergency Assistance Program
AED	Aircraft Evaluation Division
AEDI	Appalachia Economic Development Initiative
AEDT	Aviation Environmental Design Tool
AEED	Atmospheric, Earth, and Energy Division
AEFLA	Adult Education and Family Literacy Act
AEG	Aircraft Evaluation Groups (changed to AED)
AEGL	Acute Exposure Guideline Levels Program
AEI	Alliance for Economic Inclusion
AEL	Authorized Equipment List
AEO	Annual Energy Outlook \| Applied Economics Office \| Arctic Energy Office
AEP	Annual Evaluation Plan \| Public-Private Analytic Exchange Program
AER	Annual Energy Review
AERC	Agriculture Economics and Rural Communities
AEROMMA	Atmospheric Emissions and Reactions Observed from Megacities to Marine Areas
AES	Advanced Exploration Systems (unable to verify 10/23) \| APS Engineering Support Division \| Assessment Evaluation and Standardization Program \| Automated Export System
AESC	Arctic Executive Steering Committee (unable to verify 2/25)
AESMD	Atmospheric and Environmental Systems Modeling Division
AESTIR	Automated Export System Trade Interface Requirement
AET	Advanced Energy Technologies directorate
AETC	Aerosciences Evaluation and Test Capabilities

AF	Bureau of African Affairs
AFC	American Folklife Center
AFCARS	Adoption and Foster Care Reporting and Analysis System
AFCP	Ambassadors Fund for Cultural Preservation
AFDC	Aid to Families with Dependent Children (changed to TANF) \| Alternative Fuels Data Center
AFF	American FactFinder (replaced by data.census.gov) \| Assets Forfeiture Fund \| Automated Flight Following
AFFH	Affirmatively Furthering Fair Housing (unable to verify 1/25)
AFFH-T	Affirmatively Furthering Fair Housing Data and Mapping Tool
AFG	Assistance to Firefighters Grant Program
AFI	Analytical Framework for Intelligence \| Assets for Independence
AFLEET	Alternative Fuel Life-Cycle Environmental and Economic Transportation
AFM	Administrative & Financial Management
AFMD	Acquisition and Facilities Management Division
AFMER	Annual Firearms Manufacturers And Export Report
AFMLS	Asset Forfeiture and Money Laundering Section (changed to MLARS)
AFMS	Asset Forfeiture Management Staff
AFMSS	Automated Fluid Minerals Support System
AFP	Asset Forfeiture Program
AFPS	American Forces Press Service (merged into DoD News)
AFRH	Armed Forces Retirement Home
AFRI	Agriculture and Food Research Initiative
AFRPS	Animal Feed Regulatory Program Standards
AFS	Air Facility System (unable to verify 2/16) \| Armed Forces Sports
AFSC	Alaska Fisheries Science Center
AFSIC	Alternative Farming Systems Information Center
AFSP	Alien Flight Student Program (changed to FTSP) \| Annual Filing Season Program
AFSS	Animal Feed Safety System
AFUE	Aerial Firefighting Use and Effectiveness
AG	Attorney General of the United States

AG2PI	Agricultural Genome to Phenome Initiative
AGARDA	Agriculture Advanced Research and Development Authority
AGDC	Alaska Geospatial Data Clearinghouse (discontinued)
AgFF	Agriculture, Forestry, and Fishing Program
AGGI	Annual Greenhouse Gas Index
AGID	AGing, Independence, and Disability Program Data Portal (changed from AGing Integrated Database 11/19)
AGIL	Animal Genomics and Improvement Laboratory
AGILE	Advanced Graphic Intelligence Logical Computing Environment \| Autonomous Grids – Identification, Learning, and Estimation
AgMRC	Agricultural Marketing Resource Center
AGNPS	AGricultural Non-Point Source Pollution Model (unable to verify 10/22)
AGO	Acquisition and Grants Office, NOAA \| America's Great Outdoors Initiative (unable to verify 9/15)
AGRICOLA	Agricultural OnLine Access
AGS	Division of Atmospheric and Geospace Sciences
AgVets	Enhancing Agricultural Opportunities for Military Veterans Program
AGWA	Automated Geospatial Watershed Assessment
AHAR	Annual Homeless Assessment Report
AHAW	America's Heroes at Work (unable to verify 2/19)
AHCaH	Acute Hospital Care at Home
AHCF	Auxiliary Hot Cell Facility
AHCPR	Agency for Health Care Policy and Research (changed to AHRQ)
AHCY	Assistance for Homeless Children and Youth (unable to verify 9/24)
AHDR	Animal Health and Disease Research Capacity Program
AHEAD	America’s HIV Epidemic Analysis Dashboard
AHEC	Area Health Education Centers
AHED	Astrobiology Habitable Environments Database
AHERU	Agroclimate and Hydraulic Engineering Research Unit
AHHS	American Healthy Homes Survey (unable to verify 6/23)
AHMR	Abandoned Hardrock Mine Reclamation
AHOBPR	Airborne Hazards and Open Burn Pit Registry
AHPP	Alternative Housing Pilot Program (unable to verify 8/20)
AHPS	Advanced Hydrologic Prediction Service
AHRC	Advanced Housing Research Center
AHRF	Area Health Resource Files
AHRQ	Agency for Healthcare Research and Quality
AHS	American Housing Survey
AHSSD	Affordable Housing and Supportive Services Demonstration
AI	National Artificial Intelligence Initiative (unable to verify 2/25)
AI4IX	Artificial Intelligence for Interconnection program
AIA	Agriculture Innovation Agenda (unable to verify 2/25)
AIAC	Artificial Intelligence Advancement Council
AIAW	Adolescent Immunization Action Week
AIB	Actuarial Information Browser
AIBC	AI-Bioscience Collaborative (unable to verify 2/25)
AICC	Alaska Interagency Coordination Center

AID	Agency for International Development (unable to verify 2/25)
AIDD	Administration on Intellectual and Developmental Disabilities
AIDS	Acquired Immune Deficiency Syndrome
AIEO	American Indian Environmental Office
AIES	Annual Integrated Economic Survey
AILO	American Indian Liaison Office (changed to ONAA)
AIM	Aeronomy of Ice in the Mesosphere \| Assessment, Inventory, and Monitoring
AIP	Airport Improvement Program \| Animal Improvement Program \| Arctic Investigations Program
AIPD	Artificial Intelligence Patent Dataset
AIR	Aircraft Certification Service
AirMSPI	Airborne Multi-angle SpectroPolarimeter Imager
AIRR	American Indian Records Repository
AIRS	Aerometric Information Retrieval System (changed to AFS)
AIS	Automatic Identification System (Coast Guard) \| Automatic Identification System (MarineCadastre)
AISC	U.S. AI Safety Institute Consortium
AISI	U.S. Artificial Intelligence Safety Institute
AISIC	Artificial Intelligence Safety Institute Consortium
AITC	Agriculture in the Classroom Program
AITO	Artificial Intelligence & Technology Office (changed to Office of Critical and Emerging Technology, then Office of Critical and Emerging Technologies)
AIVRS	American Indian Vocational Rehabilitation Services
AIVRS-TAC	American Indian Vocational Rehabilitation Services Training and Technical Assistance Center (changed to AIVRTTAC)
AIVRTTAC	American Indian Vocational Rehabilitation Training and Technical Assistance Center
AJAX	Alpha Jet Atmospheric eXperiment
AK CASC	Alaska Climate Adaptation Science Center
AK CSC	Alaska Climate Science Center (changed to AK CASC)
AKOATS	Alaska Online Aquatic Temperature Site (unable to verify 2/25)
AL	Aerosol Laboratory (unable to verify 7/23)
ALAC	Agricultural Labor Affairs Coordinator
ALCC	Arctic Landscape Conservation Cooperative (unable to verify 12/21)
ALCF	Argonne Leadership Computing Facility
ALCP	Assisted Living Conversion Program
ALEX	Argonne Liquid Metal Experiment Facility
ALFABET	A machine-Learning derived, Fast, Accurate Bond dissociation Enthalpy Tool
ALFD	Advertising, Labeling and Formulation Division
ALFIN	Annual Survey of State and Local Government Finances
ALFRED	Archival Federal Reserve Economic Data
ALHC	Museum Grants for American Latino History and Culture
ALIC	Archives Library Information Center
ALL	Adult Literacy and Lifeskills Survey
A/LM	Office of Logistics Management (changed to Global Operations 1/25)
ALMIFI	American Latino Museum Internship and Fellowship Initiative
ALOHA	Areal Locations of Hazardous Atmospheres

ALP	Accelerating Local Potential (unable to verify 2/25) \| Accredited Laboratory Program
ALS	Academic Libraries Survey \| Advanced Light Source
ALSDA	Ames Life Sciences Data Archive
ALS-U	Advanced Light Source Upgrade
ALTBIB	Alternatives to Animal Testing Bibliography
ALTRIOS	Advanced Locomotive Technology and Rail Infrastructure Optimization System
ALWRI	Aldo Leopold Wilderness Research Institute
AMA	Agricultural Management Assistance program
AMAGIT	Advanced Mobility & Grid Integration Technology
AMB	Administrative Management Branch \| Assimilation and Modeling Branch (unable to verify 8/17)
AMBER	America’s Missing: Broadcast Emergency Response
AMCD	Air Methods and Characterization Division
AMCG	Office of Acquisitions Management, Contracts and Grants (unable to verify 1/22)
AMD	Advanced Molecular Detection
AMDAR	Aircraft Meteorological Data Reports
AME	Aviation Medical Examiner
AMEC	Alaska Mapping Executive Committee
AMED	African and Middle Eastern Division
AMES	Ames Laboratory
AMEWS	Advanced Materials for Energy-Water Systems Center
AMH	America's Marine Highway Program
AMHR	Abandoned Hardrock Mine Reclamation Program
AMHWG	Arctic Mental Health Working Group (defunct as of 2018)
AMIS	Awards Management Information System
AMJP	Aviation Manufacturing Jobs Protection Program
AML	Abandoned Mine Lands \| Abandoned Mineral Lands \| Advanced Manufacturing Laboratory
AMLER	Abandoned Mine Land Economic Revitalization Program
AMM	Advanced Materials and Manufacturing
AMMOS	Advanced Multi-Mission Operations System
AMMTO	Advanced Materials and Manufacturing Technologies Office
AMNPO	Advanced Manufacturing National Program Office
AMO	Advanced Manufacturing Office (split 10/22 into AMMTO and IEDO) \| Air and Marine Operations
AMP	Accelerating Medicines Partnership
AMPD	Air Markets Program Data (changed to CAMPD)
AMPL	Advanced Manufacturing Processing Lab
AMPM	USDA Automated Multiple-Pass Method
AMP® SCZ	Accelerating Medicines Partnership program for Schizophrenia
AMQP	Animal Model Qualification Program
AMR	Antimicrobial Resistance programs (unable to verify 3/25)
AMS	Agricultural Marketing Service
AMSO	Ames Site Office
AMT	Alternative Minimum Tax
AMTech	Advanced Manufacturing Technology Consortia
AMTIC	Ambient Monitoring Technology Information Center
AMTL	Advanced Mobility Technology Laboratory
Amtrak	National Railroad Passenger Corporation

ANA	Administration for Native Americans
ANAWG	APHIS Native American Working Group
ANCHOR	Automated NonContact Hydrologic Observation in Rivers
ANDI	Accessible Name & Description Inspector
ANES	Advanced Nuclear Energy System (unable to verify 6/23)
ANL	Argonne National Laboratory
ANNH	Alaska Native-Serving and Native Hawaiian-Serving Institutions Education Competitive Grants Program
ANS	Aquatic Nuisance Species
ANSP	Ammonium Nitrate Security Program
ANSS	Advanced National Seismic System
ANSTF	Aquatic Nuisance Species Task Force
ANTD	Advanced Network Technologies Division (unable to verify 4/22)
AO	Adaptation Organon for Resilient Natural Resources \| Administrative Office of U.S. Courts \| Agricultural Outlook (discontinued ) \| Arctic Oscillation
AOA	Administration on Aging
AOC	Architect of the Capitol
AoD	Administration on Disabilities \| Aviation and Operations Division (unable to verify 1/25)
AOIMSG	Airborne Object Identification and Management Synchronization Group

AOML	Atlantic Oceanographic and Meteorological Laboratory
A/OPE	Office of the Procurement Executive (changed to Global Acquisition 1/25)
AOSP	Airspace Operations and Safety Program
AOSSP	Aircraft Operator Standard Security Program
AOT	Accelerator Operations and Technology
AOTUS	Archivist of the United States
AP	U.S. Additional Protocol
APAC	Astrophysics Advisory Committee
APAD	Advanced Planning and Analysis Division (unable to verify 6/15)
APB	CJIS Advisory Policy Board
APC	Automated Passport Control
APCCA	Advancing Protection and Care for Children in Adversity (unable to verify 2/25)
APCD	All Payer Claims Databases
APCF	Advanced Protein Characterization Facility
APD	Advance Planning Document \| Tribal Advance Planning Document
APEC	Asia-Pacific Economic Cooperation (unable to verify 2/21)
APECx	Antigens Predicted for Broad Viral Efficacy through Computational Experimentation
APEX	Advanced Power Electronic Conversion Systems
APFO	Aerial Photography Field Office (changed to GEO)
APG	Agency Priority Goal (unable to verify 2/25)
APH	American Printing House for the Blind
APHIS	Animal and Plant Health Inspection Service
APIS	Advance Passenger Information System \| Alcohol Policy Information System
APLAA	Office of Asian Pacific, Latin American, and African Analysis (unable to verify 1/17)
APLIC	Alaska Public Lands Information Centers
APNSA	Assistant to the President for National Security Affairs (unable to verify 2/25)
APOD	Astronomy Picture of the Day
APP	Accelerating Promising Practices for Small and Rural Libraries Program \| Adolescent Pregnancy Prevention \| Aerosol Properties & Processes program \| Apex Predators Program \| Appellate Section \| Office of Airport Planning and Programming
AppEEARS	Application for Extracting and Exploring Analysis Ready Samples
APPEL	Academy of Program/Project & Engineering Leadership
AppFT	Patent Application Full-Text and Image Database (replaced by Patent Public Search)
APPLETREE	ATSDR’s Partnership to Promote Local Efforts to Reduce Environmental Exposure
APPRIL	Active Pesticide Product Registration Informational Listing
APPS	Active Partners Performance System

APRHB	Air Pollution and Respiratory Health Branch (unable to verify 1/20)
APS	Adult Protective Services \| Advanced Photon Source
APS-TD	Applied Physics and Superconducting Technology Division
APT	Alcohol Policy Taxonomy \| Antecedent Precipitation Tool
APTF	Advanced Placement Test Fee (unable to verify 9/24)
APTI	Air Pollution Training Institute (decommissioned and replaced by AirKnowledge)
AQA	Air Quality Analysis
AQI	Agricultural Quarantine Inspection \| Air Quality Index
AQIM	Agricultural Quarantine Inspection Monitoring
AQIP	Air Quality Implementation Plans
AQPI	Advanced Quantitative Precipitation Information
AQS	Air Quality System
AR & PSP	Antimicrobial Resistance & Patient Safety Portal
ARA	National Engagement and Regional Administration
ARB	Administrative Review Board \| Animal Resources Branch (replaced by CMB)
ARC	Accelerating Rare disease Cures Program \| Acquisition Regulation Comparator \| Administrative Resource Center \| Agriculture Risk Coverage \| Appalachian Regional Commission \| Applied Research Center (unable to verify 10/21) \| Arbovirus Reference Collection \| Arctic Report Card \| Mental Health and Aviation Medical Clearances Rulemaking Committee
ARCIS	Archives and Records Centers Information System
ARCOS	Automation of Reports and Consolidated Orders System
ARC/PLC	Agriculture Risk Coverage/Price Loss Coverage Program
ARCSIX	Arctic Radiation-Cloud-Aerosol-Surface Interaction EXperiment
ARCTAS	Arctic Research of the Composition of the Troposphere from Aircraft and Satellites
ARCTIC	U.S. Arctic Research Commission (also, USARC)
ARCWEST	Arctic Whale Ecology Study
ARC-X	Climate Change Adaptation Resource Center

ARD	Air Resources Division \| Annual Report Dashboards \| Arrest-Related Deaths
ARDAP	Accelerator Research & Development and Production
ARDI	Alcohol-Related Disease Impact
ARDIS	Automated Radiation Portal Monitor Data Integration System
ARDP	Advanced Reactor Demonstration Program
AREP	Amazon Regional Environment Program (unable to verify 2/25)
AREWG	Arctic Renewable Energy Working Group
ARIA	Advanced Rapid Imaging and Analysis \| Assessing Risks and Impacts of AI \| Automated Research Impact Assessment
ARIEL	Atmospheric Remote-sensing Infrared Exoplanet Large-survey
ARIES	Advanced Research on Integrated Energy Systems \| Automated Real-time Identity Exchange System
ARIS	Air Resources Information System (changed to Air Quality in Parks)
ARISE	Appalachian Regional Initiative for Stronger Economies
ARK	Astrophysics Research Knowledgebase
ARL	Adoption Readiness Level \| Air Resources Laboratory
ARM	Agency Relationship Management & Engagement Division \| Atmospheric Radiation Measurement
ARMAD	Analysis Ready Materials Dataset
ARMD	Aeronautics Research Mission Directorate
ARME	Agriculture Risk Management Education Partnerships
ARMI	Amphibian Research and Monitoring Initiative
ARMS	Agricultural Resource Management Survey
ARNet	Acquisition Reform Network (changed to AcqNet)
ARNOLD	All Roads Network Of Linear Referenced Data
ARO	Agency Records Officer
AROC	Agency Records Officer Credential
ARP	Acid Rain Program \| AIDS Research Program (changed to HRP) \| American Rescue Plan \| Animal Resource Program \| Applied Research Program (defunct; merged into BRP, EGRP, and HDRP) \| Archival Recovery Program
ARP-AIRE	American Rescue Plan American Indian Resilience in Education
ARP EANS	ARP Emergency Assistance to Non-Public Schools
ARP ESSER	ARP Elementary and Secondary School Emergency Relief Fund
ARP HCY	ARP Elementary and Secondary School Emergency Relief – Homeless Children and Youth
ARP-OA SEA	American Rescue Plan-Outlying Areas State Educational Agencies
ARPA-E	Advanced Research Projects Agency-Energy
ARPA-H	Advanced Research Projects Agency for Health
ARRA	American Recovery and Reinvestment Act
ARRI	Appalachian Regional Reforestation Initiative
ARRT	Advanced Rehabilitation Research and Training
ARS	Agricultural Research Service \| Area Ruggedness Scale \| Atmospheric Remote Sensing
ARSET	Applied Remote Sensing Training Program
ART	Accessibility Requirements Tool \| Assisted Reproductive Technology
ARTS	Annual Retail Trade Survey
ARWSWG	Alaska Rural Water and Sanitation Working Group

AS	Acquisition Services \| Office of Aviation Safety
ASA	Assistant Secretary for Administration, HHS
ASAB	Alcohol and Substance Abuse Branch
ASAC	Applied Sciences Advisory Committee \| Aviation Security Advisory Committee
ASAMM	Aerial Surveys of Arctic Marine Mammals
ASAP	Aerospace Safety Advisory Panel \| Alcohol and Substance Abuse Program (changed to ASAB) \| All Stations Accessibility Program \| Automated Standard Application for Payments
ASAPP	Active Shooter Attack Prevention and Preparedness
ASB	Agricultural Statistics Board
ASC	Advanced Simulation and Computing \| Alaska Science Center \| Appraisal Subcommittee \| Arctic Studies Center
ASCAC	Advanced Scientific Computing Advisory Committee
ASCE	Assisting Specialty Crop Exports
ASCEND	Agricultural Science Center of Excellence for Nutrition and Diet
ASCENDS	Active Sensing of CO2 Emissions over Nights, Days, and Seasons
ASCQR	Ambulatory Surgical Center Quality Reporting Program
ASCR	Advanced Scientific Computing Research
ASD	Accelerator Systems Division \| Astrophysics Science Division \| Atomic Spectra Database
ASDC	Atmospheric Science Data Center
ASE	Annual Survey of Entrepreneurs
ASEC	Annual Social and Economic Supplement
ASER	Annual Site Environmental Report \| list of individual site ASERs

ASF DAAC	Alaska Satellite Facility Distributed Active Archive Center
ASFIN	Annual Survey of State Government Finances
ASGC	Atmospheric Sciences & Global Change (changed to Atmospheric Science)
ASH	Office of Security & Hazardous Materials Safety \| Office of the Assistant Secretary for Health (changed to OASH)
ASHA	American Schools and Hospitals Abroad (unable to verify 2/25)
AS-IA	Office of the Assistant Secretary – Indian Affairs
ASIA-AQ	Airborne and Satellite Investigation of Asian Air Quality
ASIAS	Aviation Safety Information Analysis and Sharing
ASIC	Accounting Standards Implementation Committee
ASIST	Actionable and Strategic Integrated Science and Technology
ASIWG	Adaptation Science Interagency Working Group (unable to verify 10/23)
ASJ	Annual Survey of Jails
ASL	Assistant Secretary for Legislation
ASLBP	Atomic Safety and Licensing Board Panel
ASM	Annual Survey of Manufactures \| At-Sea Monitoring Program
ASMD	Atmospheric Sciences Modeling Division
ASO	Airborne Snow Observatory \| Argonne Site Office \| Armed Security Officers Program
ASOA	Acquisition Support and Operations Analysis (replaced by CDS)
ASOS	Automated Surface Observing System
ASP	Airborne Science Program
ASPE	Assistant Secretary for Planning and Evaluation
ASPECT	Airborne Spectral Photometric Environmental Collection Technology
ASPEP	Annual Survey of Public Employment & Payroll
ASPIRE	Advancing State Policy Integration for Recovery and Employment \| Algorithm Suggesting Proportionate Incident Response Engagement
ASPP	Annual Survey of Public Pensions
ASPR	Administration for Strategic Preparedness and Response (previously, Assistant Secretary for Preparedness and Response)
ASR	Abortion Surveillance System \| Alternative Summary Reporting \| Annual Survey of Refugees \| Antenna Structure Registration \| Atmospheric System Research
ASRAC	Appliance Standards and Rulemaking Federal Advisory Committee
ASRE	Atmospheric Science for Renewable Energy Development
ASRS	Aviation Safety Reporting System
ASSIST	Administrative Subsidy Support and Innovation Solutions Team (unable to verify 2/25)
AST	Division of Astronomical Sciences \| Office of Commercial Space Transportation
ASTEP	Astrobiology Science & Technology for Exploring Planets (unable to verify 4/16)
ASTER	Advanced Spaceborne Thermal Emission and Reflection Radiometer
ASTHROS	Astrophysics Stratospheric Telescope for High Spectral Resolution Observations at Submillimeter-wavelengths
ASTP/ONC	Assistant Secretary for Technology Policy and Office of the National Coordinator for Health Information Technology
ASTR	Annual Statistical Transparency Report
AT Program	Assistive Technology Program

ATA	Annual Threat Assessment \| Office of Antiterrorism Assistance - changed to Antiterrorism Assistance Program
ATAK	Android Team Awareness Kit (archived)
ATB	Annual Technology Baseline
ATCMTD	Advanced Transportation and Congestion Management Technologies Deployment Program (unable to verify 3/25)
ATCR	Air Travel Consumer Report
ATCSCC	Air Traffic Control System Command Center
AT-CTI	Air Traffic Collegiate Training Initiative
ATD	Advanced Technologies Division (unable to verify 11/23) \| Advanced Technology Demonstrator \| Alternatives to Detention
ATDC	Agency Transition Directors Council
ATDD	Atmospheric Turbulence and Diffusion Division
ATDP	Addiction Treatment Discovery Program
ATE	Advanced Technological Education
ATF	Accelerator Test Facility \| Bureau of Alcohol, Tobacco, Firearms & Explosives
ATFE	Bureau of Alcohol, Tobacco, Firearms & Explosives
ATIP	Anti-Trafficking in Persons (changed to OTIP) \| Automated Track Inspection Program (unable to verify 5/24)
ATJ	Office for Access to Justice
ATLAS	Argonne Tandem Linac Accelerator System
ATM	Agricultural Trade Multipliers
ATMB	Analytic Tools and Methods Branch (merged into DPHID)
ATN	Animal Telemetry Network
ATO	Air Traffic Organization
ATOC	Aviation Training and Operations Center
ATom	Atmospheric Tomography Mission
ATOMIC	Atlantic Tradewind Ocean–Atmosphere Mesoscale Interaction Campaign
ATP	Advanced Technology Program (unable to verify) \| Agricultural Trade Promotion Program
ATR	Antitrust Division
ATRF	Advanced Technology Research Facility
ATRO	Advanced Technology Research Office
ATS	Adoptions Tracking Service \| Automated Targeting System
ATSD-IO	Assistant to the Secretary of Defense for Intelligence Oversight (changed to DOD SIOO)
ATSDR	Agency for Toxic Substances and Disease Registry

ATTAINS	Assessment and Total Maximum Daily Load Tracking and Implementation System
ATTREX	Airborne Tropical TRopopause EXperiment
ATUS	American Time Use Study
ATVM	Advanced Technology Vehicles Manufacturing
ATW	Air Toxics Web Site
AVA	ASTER Volcano Archive
AVC	Bureau of Arms Control, Verification and Compliance (changed to ADS)
AVERT	AVoided Emissions and geneRation Tool
AVIA	Animal and Veterinary Innovation Agenda
AVID	Assimilation and Verification Innovation Division
AVMPI	Audiovisual Media Preservation Initiative
AVO	Alaska Volcano Observatory
AVRS	AIDS Vaccine Research Subcommittee
AVS	Applicant/Violator System \| Aviation Safety
AVSO	Appraisal and Valuation Services Office
AV TEST	Automated Vehicle Transparency and Engagement for Safe Testing Initiative
AWAE	Air, Water, & Aquatic Environments Program (changed to W&W)
AWAHDC	Animal Welfare Act History Digital Collection
AWAKEN	American WAKE experimeNt
AWARE	Advancing Wellness and Resiliency in Education \| Agency-Wide Adaptive Risk Enumeration
AWBERC	Andrew W. Breidenbach Environmental Research Center
AWC	Afghanistan War Commission \| Angel Watch Center \| Aviation Weather Center
AWE	Academy for Women Entrepreneurs
AWEP	Agricultural Water Enhancement Program (unable to verify 10/22)
AWFCG	Alaska Wildland Fire Coordinating Group
AWIC	Animal Welfare Information Center
AWIPS	Advanced Weather Interactive Processing System
AWL	Areawide Leasing Study
AWOIS	Automated Wreck and Obstruction Information System
AWOS	Automated Weather Observing System
AWP	Aerosol Wind Profiler
AWTP	Advanced Wireless Test Platforms (unable to verify 10/22)
AWTS	Annual Wholesale Trade Survey
AxCS	Accelerating Cancer Screening (unable to verify 3/25)
AXL	Aquatic Experimental Lab (unable to verify 8/23)
AZWSC	Arizona Water Science Center