| Abbreviation | Definition |
|---|---|
| ATEA | Australian Teacher Education Association |
| ATED | Australian Thesaurus of Education Descriptors |
| ATFA | Australian Table Football Association |
| ATFA | Australian Technical Football Academy |
| ATFA | Australian Timber Flooring Association |
| ATFS | Australian Tours for Sport |
| ATGA | Australian Table Grape Association |
| ATGC | Australian Translational Genomics Centre |
| ATGN | Australian Tabletop Gaming Network |
| ATGRC | Australian Trifolium Genetic Resource Centre |
| ATHC | Australian Truck Hire Company |
| ATHOC | Australian Timeshare and Holiday Ownership Council |
| ATHOC | Australian Timeshare Holiday Ownership Council |
| ATI | Australian Technologies Inc |
| ATIC | Australian Tourism Industry Council |
| ATIC | Australian Transformation and Innovation Centre |
| ATIF | Australian Timber Importers Federation |
| ATMAC | Australian Tobacco Marketing Advisory Committee |
| ATMG | Australian Turkish Media Group |
| ATN | Australian Technology Network |