VAAC
| Acronym | Definition |
|---|---|
| VAAC | Volcanic Ash Advisory Center |
| VAAC | Valle Arriba Athletic Club (Venezuela) |
| VAAC | Volvo Ambient Air Cleaner (Volvo vehicles) |
| VAAC | Veterans Affairs Advisory Committee (Washington) |
| VAAC | Vectored-thrust Aircraft Advanced Flight Control (active control technology research) |
| VAAC | Viral Antigen-Antibody Complex |