| Abbreviation | Definition |
|---|---|
| CRES | Community Radio Education Society |
| CRMCC | Collège Royal des Médecins et Chirurgiens du Canada |
| CRMCC | Collge Royal des Mdecins et Chirurgiens du Canada |
| CRMCC | Royal College of Physicians and Surgeons of Canada |
| CRS | Cleveland Restoration Society |
| CRS | Community Renewal Society |
| CRS | Controlled Release Society |
| CRS | Corporate Responsbilities for Society |
| CRSI | Calorie Restriction Society International |
| CRSS | Colchester Residential Services Society |
| CS | Cliometric Society |
| CS | Cybernetics Society |
| CSA | California Society of Anesthesiologists |
| CSA | Canadian Society of Agronomy |
| CSA | Casting Society of America |
| CSA | Cryogenic Society of America |
| CSA | Société Canadienne d'Agronomie |
| CSA | Socit Canadienne d'Agronomie |
| CSAA | Canadian Sociology and Anthropology Association |
| CSAA | Chinese Society of Aeronautics and Astronautics |