| Abbreviation | Definition |
|---|---|
| CARM | Caring Adult Role Model |
| CARP | Canadian Association for Retired Persons |
| CARREC | Citizens Against the Ronald Reagan Equestrian Campground |
| CARS | Chibi Adoption and Request Service |
| CARS | Citizens Acting for Rail Safety |
| CARS | Columbus Art Research Society |
| CARS | Communications Assistance Resource Service |
| CARS | Consumer Automotive Resource Services |
| CART | Coins For Alzheimer's Research Trust |
| CAS | Center for Auto Safety |
| CAS | Children's Aid Society |
| CAS | Crossroads Adoption Services |
| CASA | Community Activities And Services Association |
| CASA | Court Appointed Special Advocates |
| CASB | Council of Agencies Serving the Blind |
| CASD | Center for Autism Spectrum Disorders |
| CASE | Council for Advancement and Support of Education |
| CASIN | The Council for American Students in International Negotiations, Inc. |
| CASNY | Children's Aid Society of New York |
| CASOC | Children's Aid Society of Oxford County |