| Abbreviation | Definition |
|---|---|
| CSVA | Columbia SIPA Veterans Association |
| CSWA | Clinical Social Work Association |
| CTA | California Trucking Association |
| CTA | Catamount Trail Association |
| CTA | Colorado Translators Association |
| CTA | Consolidated Tape Association |
| CTAA | Canadian Technical Asphalt Association |
| CTAA | Cass Tech Alumni Association (Cass Technical High School; Detroit, MI) |
| CTAA | Chesterfield Township Athletic Association |
| CTAA | Chinese Taipei Athletics Association |
| CTAA | Council Of Turkic American Associations |
| CTAA | Cranberry Township Athletic Association |
| CTAM | Cable and Telecommunications Association for Marketing |
| CTAM | Communication and Theater Association of Minnesota |
| CTAM | Community Theatre Association of Michigan |
| CTAMB | Central Texas Association of Mortgage Brokers |
| CTASA | Callanetics Teachers Association of South Africa |
| CTASA | Cross Timbers Action Shooting Association |
| CTBA | California Thoroughbred Breeders Association |
| CTBA | Central Texas Ballooning Association |