| 7USCA | 7th United States Court of Appeals | |
| 8CS | 8 Canada Square | |
| A/E | Attachments/Enclosures | |
| A4I | Advanced Algorithms, Autonomy, and Artificial Intelligence | |
| A4I | Advanced Algorithms, Autonomy, and Artificial Intelligence (A4I) | |
| A4NH | Agriculture for Nutrition and Health | |
| A4S | Accounting for Sustainability | |
| AA | Attendance Allowance | |
| AA & QMG | Assistant Adjutant and Quartermaster General | |
| AACG | Addis Ababa City Government | |
| AACI | Accredited Appraiser Canadian Institute | |
| AAD | Australian Antarctic Division | |
| AAFC | Agriculture and Agri-Food Canada | |
| AAIM | Asian American Intercultural Ministry | |
| AAMEN | African American Ministry Empowerment Network | |
| AAMI | Above All Ministries International | |
| AANI | Alumni Association of the National Institute (Nigeria) | |
| AAO | Assumed adverse obstacle | |
| AAPST | Agency of Agrarian Property of the State Treasury | |
| AARM | Atheist Apologetics Research Ministry | |
| AAS | Advanced Automation System | |
| AAS | Aquatic Agricultural Systems | |
| AASC | Assam Administrative Staff College | |
| AAT | Australian Antarctic Territory | |
| ABA | Architectural Barriers Act |
| ABBM | Application for Ballot By Mail | |
| ABDF | Aboriginal Business Development Fund | |
| ABG | Academic Business and Government | |
| ABI | Agro Bio Institute (of Bulgaria) | |
| ABLES | Adult Blood Lead Epidemiology and Surveillance | |
| ABOD | Association Board of Directors | |
| ABS | Australian Bureau of Statistics | |
| AC-12 | Anti-Corruption Unit 12 | |
| ACA | Agency for Cultural Affairs | |
| ACA | Anti-Corruption Agency | |
| ACC | Anti Corruption Commission | |
| ACC3 | All Cargo Carrier from third country | |
| ACCCC | Anti Corruption & Crime Control Committee | |
| ACCG | Austrian Code of Corporate Governance | |
| ACCI | Agencia Colombiana de Cooperacion Internacional | |
| ACCM | Advisory Council for the Church’s Ministry | |
| ACCW | Air Condition Coach 3tire | |
| ACEC | Arab Commission for Education and Communication | |
| ACEG | Association for Counselors and Educators in Government | |
| ACEG | Association of Counselors and Educators in Government | |
| ACEG | Amrita Center for Economics and Governance | |
| ACELG | Amsterdam Centre for European Law and Governance | |
| ACFAC | Academic Facility | |
| ACFC | Agence de la consommation en matière financière du Canada | |
| ACFIC | All-China Federation of Industry and Commerce |
| ACGA | American Center for Government Auditing | |
| ACGB | Apostolic Congress of Great Britain | |
| ACGR | Annual Corporate Governance Report | |
| ACLG | Ateneo Center for Leadership and Governance | |
| ACLG | Academy On Capitalism and Limited Government | |
| ACLG | Approved Classification and Labelling Guide | |
| ACMA | Australian Communictions and Media Authority | |
| ACOA | Australia Coat Of Arms | |
| ACOSS | Agence Centrale des Organismes de Securite Sociale | |
| ACPG | Advisory Committee on Permanent Governance | |
| ACPO | Association of Chief Police Officers | |
| ACRJ | Asian Communities for Reproductive Justice | |
| ACRO | Australian Community Safety & Research Organisation | |
| ACRO | Assistant Chief Regulatory Officer | |
| ACROSS | Accelerated Commercial Release Operating Support System | |
| ACSG | Art Center Student Government | |
| ACT | Australian Capital Territory | |
| ACWG | Anti Corruption Working Group | |
| AD | After the Downfall | |
| ADA | Aeronautical Development Agency | |
| ADA | American Disability Act | |
| ADC | Actual Date of Confinement | |
| ADCCI | Abu Dhabi Chamber of Commerce and Industry | |
| ADCD | Abu Dhabi Civil Defense | |
| ADCS | Association of Director of Children’s Services |
