| CASAA | Center for the Arts and Symbolism in Ancient America 
| Others |
| CASAA | Center on Alcoholism Substance Abuse and Addictions
| Others |
| CASAA | Central Application Service for Anesthesiologist Assistants
| Others |
| CASAA | Centralized Application Service for Anesthesiologist Assistants
| Others |
| CASAA | Colleges of Arts Sciences Alumni Association
| Others |
| CASAA | Consumer Advocates for Smoke-free Alternatives Association
| Others |