| Abbreviation | Definition |
|---|---|
| CISS | Counselor Initiative and Student Support |
| CIST | Clinical Investigator Student Trainee |
| CIST | Clinical Investigator Student Training |
| CKB | Corporation des Karabins de Bicêtre (French medical student association) |
| CL&E | Campus Life and Engagement |
| CLSA | Campus Life and Student Affairs |
| CLSA | Caribbean Law Student Association |
| CLSA | Caribbean Law Students Association |
| CLSA | Chicano Latino Student Affairs |
| CLSA | Cornell Law Students Association |
| CLSC | Chicanx Latinx Student Center |
| CLSD | Chicana Latino Student Development |
| CLSS | Chicano Latino Student Services |
| CLSS | Chinese Law Students Society |
| CMASS | Center for Multicultural Advancement and Student Success |
| CMSA | Council for Minority Student Affairs |
| CMSC | Chicago Medical Student Council |
| CMSS | Center for Multicultural Student Services |
| CNSA | California Nursing Students Association |
| CNSA | California Nursing Students' Association |