| Abbreviation | Definition |
|---|---|
| CASC | Canadian Association of Spiritual Care |
| CASE | Colorado Association of School Executives |
| CASF | Contractors Association of South Florida |
| CASI | Canadian Association of Snowboard Instructors |
| CASID | Canadian Association for the Study of International Development |
| CASKA | Chicago Area Sea Kayakers Association |
| CASL | Canadian Association for School Libraries |
| CASL | Connecticut Association of School Librarians |
| CASN | Canadian Association of Schools of Nursing |
| CASN | Charity Association of Student Nurses |
| CASN | Colorado Association of School Nurses |
| CASN | Conference Association of Schools of Nursing |
| CASO | Coordinators Association of Southwestern Ontario |
| CASP | California Association of School Psychologists |
| CASP | Canadian Association for Suicide Prevention |
| CASP | Cleveland Association of School Psychologists |
| CASP | Connecticut Association of School Psychologists |
| CASPA | Colorado Association of School Personnel Administrators |
| CASQA | California Association of Stormwater Quality Agencies |
| CASSA | Child and Adolescent Studies Student Association |