| Rank | Abbreviation | Meaning |
|---|
| ***** | CASAS | Crime and Sexual Assault Support
| |
| ***** | CASAS | Center for Academic Support and Advising Services
| |
| ***** | CASAS | Commonwealth Association of Scientific Agricultural Societies
| |
| *** | CASAS | Center for the Advanced Study of Aging Services
| |
| *** | CASAS | Court Appointed Special Advocates
| |
| *** | CASAS | Civil Aviation Safety Authority Suriname
| |
| *** | CASAS | Centre for Applied South Asian Studies
| |
| *** | CASAS | Consortium of Alcohol and Substance Abuse Services
| |
| ** | CASAS | Centralized Aircraft Survivability Assessment System
| |
| ** | CASAS | California Adult Student Assessment System
| |
| ** | CASAS | Collectif pour l'Accueil des Solliciteurs d'Asile a Strasbourg
| |
| ** | CASAS | computer-aided skeletal age scoring system
| |
| ** | CASAS | Center for the Advanced Study of African Society
| |
| ** | CASAS | Centre for Advanced Studies of African Societies
| |
| * | CASAS | Center for Advanced Studies of African Society
| |
| * | CASAS | Committee for the Allocation of Student Activity Space
| |
| * | CASAS | Committee to Allocate Student Activity Space
| |
| * | CASAS | Carrie A Seaman Animal Shelter
| |
| * | CASAS | Center for Advanced Studies of African Societies
| |
| * | CASAS | Centre for Advanced Studies of African Society
| |
| * | CASAS | Center for Advanced Studies in Adaptive Systems
| |
| * | CASAS | Comprehensive Adult Student Assessment System
| |
| * | CASAS | Community Action For Sustainable And Affordable Solutions
| |
| * | CASAS | Computer-Assisted Skeletal Age Score
| |
| * | CASAS | Central American Study and Service
| |