- CASAA stands for Consumer Advocates for Smoke-Free Alternatives Association (Mobile, AL)
- CASAA stands for Canadian Association of Student Activity Advisors (Guelph, Ontario, Canada)
- CASAA stands for Center for Alcohol, Substance Abuse and Addictions (University of New Mexico)
- CASAA stands for Chinese American Society of Ann Arbor (est. 1994; Ann Arbor, MI)
- CASAA stands for Colleges of Arts and Sciences Alumni Association (University of Hawaii)
- CASAA stands for Central and South American Alliance
- CASAA stands for Combined Arms Studies Analysis Activity
CASAA