ASTD
| Acronym | Definition |
|---|---|
| ASTD | American Society for Training and Development |
| ASTD | American Society of Training and Development (Alexandria, Virginia) |
| ASTD | Air-Sea Temperature Difference |
| ASTD | Air Supported Threat Defense |
| ASTD | Activity-Related Soft Tissue Disorder (overuse or repetitive strain injuries) |
| ASTD | Antiship Torpedo Defense (System) |
| ASTD | Advanced Systems and Technology Department (NASA) |
| ASTD | Associate of the Society of Typographic Designers |