| Abbreviation | Definition |
|---|---|
| ASTRA | Application of Science and Technology in Rural Areas |
| ASTRO | Alternative Science Technology Research Organisation |
| ASTS | Agilent Science and Technology Symposium |
| ASTT | Administration of Science Technology and Training |
| ASTU | Assam Science and Technology University |
| ASTW | Asean Science And Technology Week |
| ASTWG | Advanced Sampling Technology Work Group |
| ASTWG | Advanced Sampling Technology Working Group |
| ASTWG | Advanced Sensor Technology Working Group |
| ASTWG | Advanced Spaceport Technology Working Group |
| AT | Advance Technology |
| ATA | Academy for Technology and Academics |
| ATA | Advanced Technology Academy |
| ATA | Advanced Technology Attachement |
| ATA | Applied Technology Associates |
| ATAAC | Assistive Technology and Augmentative and Alternative Communication |
| ATAB | Academic Technology Advisory Board |
| ATAB | Advanced Technology Advisory Board |
| ATAC | Advanced Technology And Academic Centre |
| ATAC | Advanced Technology and Application Center |