| Acronym | Definition |
|---|
| ASTT➣Australasian Society for Trenchless Technology (est. 1991) |
| ASTT➣Applied Science Technologists and Technicians (Canada) |
| ASTT➣Association Sportive de Tennis de Table (French: Table Tennis Sports Association) |
| ASTT➣Advanced Simulation Technology Thrust (DARPA) |
| ASTT➣Advanced Steam Traction Trust |
| ASTT➣Airborne Surveillance and Tracking Technology |
| ASTT➣Angle Sum Triangle Theorem |
| ASTT➣Air Sample Tracking/Trending |