| Abbreviation | Definition |
|---|---|
| AAST | Academy for the Arts Science and Technology |
| AAST | Academy for the Arts, Science and Technology |
| AAST | Arab Academy for Science and Technology |
| AAT | Austin American Technology |
| AATE | Atlanta Area Technology Educators |
| AATI | Advanced Analogic Technologies Inc |
| AATP | Agribusiness Applied Technology Park |
| AATT | Alps Adriatic Technology Transfer |
| AAWT | Aland Advanced Water Technology |
| ABATS | Ali Bin Ali Technology Solutions |
| ABC | ActionScript Bytecode |
| ABET | Accreditation Board for Engineering Technology |
| ABET | Accreditation Board of Engineering and Technology |
| ABET | Accrediting Board for Engineering and Technology |
| ABRP | A Better Route Planner |
| ABST | Animal Behavior Science and Technology |
| ABT | Active Braking Technology |
| ABWG | Animal Biotechnology Working Group |
| ACART | Advisory Committee on Assisted Reproductive Technology |
| ACAT | Automatic Collision Avoidance Technology |