ASTO
| Acronym | Definition |
|---|---|
| ASTO | Association of Sail Training Organisations (UK) |
| ASTO | Apple Sales Training Online |
| ASTO | Antistreptolysin O |
| ASTO | Association of Scientific and Technical Officers (India) |
| ASTO | Advanced Systems and Technology Office (Naval Sea Systems Command) |
| ASTO | Aerospace and Technology Oberpfaffenhofen (Germany) |