| AOR | Area of Responsibility✓ Verified | Business, Corporate, Military, Legal |
| AOTP | Army of the Pharaohs✓ Verified | Music, Band, Organization |
| APFP | AWS Partner Funding Portal✓ Verified | Finance, Fund, Technology, Cloud Computing, AWS |
| APJ Abdul Kalam | Avul Pakir Jainulabdeen Abdul Kalam✓ Verified | Name, Person |
| ARA | Area Redevelopment Act✓ Verified | Business, Government, Policy |
| ARAO | Anti Racism and Anti Oppression✓ Verified | Education, Framework |
| ASAP | As Soon As Possible✓ Verified | Communication, Email, Slang |
| ASCII | American Standard Code for Information Interchange✓ Verified | Computer Programming |
| ASI | Aerospace Services India✓ Verified | Company, Weapon, Manufacturing |
| ASI | Archaeological Survey of India✓ Verified | Agency, Government, Cultural Heritage, Organization, Archaeology |
| ASOSAI | Asian Organization of Supreme Audit Institutions✓ Verified | Organization |
| ASST | Assistant✓ Verified | Business, Designation / Rank, Organization |
| ASST | Associate✓ Verified | Business, Designation / Rank, Organization |
| ATLA | Acquisition, Technology & Logistics Agency✓ Verified | Agency, Military, Defence |
| ATM | Automated Teller Machine✓ Verified | Bank, Finance, Banking, Technology |
| ATT | Arms Trade Treaty✓ Verified | Military, Policy |
| AVI | Audio Video Interleave✓ Verified | File Extension, Technology |
| AVIC | Aviation Industry Corporation of China✓ Verified | Business, Company, Military, Air Force, Army, Defence, Marine Corps, Navy, Weapon, Industry, Manufacturing |
| AVNL | Armoured Vehicles Nigam Limited✓ Verified | Company, Government, Military, Defence, Manufacturing |
| AVOD | Ad-based Video on Demand✓ Verified | Advertising, Media & Entertainment, Video Streaming |
| AVP | Associate Vice President✓ Verified | Business, Company, Designation / Rank |
| AVYAY | Atal Vayo Abhyudaya Yojana✓ Verified | Government, Scheme |
| AWS | Amazon Web Services✓ Verified | Company, Technology, Cloud Computing, AWS |