| AATD | Accrediting Alliance for Training and Development 
| Others |
| AATD | Advanced Aviation Training Device
| Others |
| AATD | Advanced Aviation Training Devices
| Others |
| AATD | Alpha Anti Trypsin Deficiency
| Others |
| AATD | Alternative Amount of Tender Deposit
| Others |
| AATD | Applied Aviation Technology Directorate
| Others |
| AATD | Art At The Dump
| Others |
| AATD | Association of Agencies for Treatment and Development
| Others |
| AATD | Australian Accounting and Taxation Database
| Others |
| AATD | Australian Accounting Taxation Database
| Others |
| AATD | Australian Agility Team Dog
| Others |
| AATD | Aviation Applied Technology Directorate
| Others |