| Abbreviation | Definition |
|---|---|
| ATS | Australian Technology Showcase |
| ATS | Automated Trading System |
| ATSM | Achieving Total Systems Management |
| ATSO | Alternative Transitional Standard Offer |
| ATSO | Authorized Training and Support Organization |
| ATT | At The Threshold |
| ATT | Attachment |
| ATTF | Advanced Technology Task Force |
| ATTRA | Appropriate Technology Transfer for Rural Areas |
| AuBD | Australia Business Directory |
| AUCB | All yoU Can Buy |
| AUM | Assets Under Management |
| AV | Apraiser Variation |
| AVC | Automotive Value Chain |
| AVIANCA | Aerovias Nacionales de Colombia |
| AVPE | Added Value Per Employee |
| AVS | Added Value and Sophistication |
| AWA | Alternative Workplace Arrangement |
| AWCF | Agricultural Water Conservation Fund |
| AWCP | American Women Club Philippines |