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