Acronym |
Definition |
| AA | Ansar Allah fighting party to Yemen conflict |
| AAA | Authority Authorization AAA |
| AAA | Autonomous Administrative Authority |
| AAEA | Association of African Election Authorities |
| AAHK | Airport Authority Hong Kong |
| AAI | Airports Authority of India |
| AAIA | Air Accident Investigation Authority |
| AALA | Adventurous Activities Licensing Authority |
| AALA | Adventure Activities Licensing Authority |
| AAOCC | Authority Accuracy Objectivity Currency and Coverage |
| AAPA | American Association of Port Authorities |
| AARA | Access and Amendment Refusal Authority |
| AATA | Arizona Automobile Theft Authority |
| AATA | Arbor Area Transportation Authority |
| AATT | Airports Authority of Trinidad and Tobago |
| ABCA | Ausable Bayfield Conservation Authority |
| ABCD | Authority Bias Coverage And Date |
| ABEI | Authority of Broadcasting and Electronic Information |
| ABIM | American Board of Internal Medicine |
| ABO | Authorities Budget Office |
| ABP | American Board of Paediatrics |
| ABRS | Authority of British Riding Schools |
| ACA | Allied Control Authority |
| ACA | Arizona Commerce Authority |
| ACAA | Ada Conformity Assessment Authority |
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