| Acronym | Definition |
|---|
| CASAC | Clean Air Scientific Advisory Committee |
| CASAC | Credentialed Alcoholism and Substance Abuse Counselor |
| CASAC | Canadian Association of Sexual Assault Centres (Vancouver, British Columbia, Canada) |
| CASAC | Companies and Securities Advisory Committee (Australia) |
| CASAC | Community Action and Support against Crime (UK) |
| CASAC | Custody and Support Assistance Clinic (University of Pennsylvania; Philadelphia, PA) |
| CASAC | Club Automovilístico Santiago AC (Portuguese: Automobile Club Santiago AC; Guadalajara, Mexico) |
| CASAC | Chief of the Air Staff Advisory Committee (Australia) |
| CASAC | Certified Alcohol and Substance Abuse Counselor |
| CASAC | Central American Small Arms Control (UN) |