| Abbreviation | Definition |
|---|---|
| CALIF | California |
| CAMU | Colorado Association of Municipal Utilities |
| CARE | California Artificial Reef Enhancement |
| CASAA | Consumer Advocates for Smoke-free Alternatives Association |
| CAUS | Color Association of the United States |
| CB | Council Bluffs, Iowa |
| CBSS | Council of the Baltic Sea States |
| CBVA | Colonial Beach, Virginia |
| CC | Corpus Christi, Texas |
| CCAS | Center for Coordinated Assistance to States |
| CCB | Cape Cod Bay |
| CDC | Centers for Disease Control and Prevention |
| CEUS | Central and Eastern United States |
| CFL | Central FLorida |
| CFLP | California Family Law Practice |
| CFSM | Congress of the Federated States of Micronesia |
| CHIC | California Here I Come |
| CLAM | California, Louisiana, Arkansas, and Missouri |
| CM | Cape May, New Jersey |
| CM | Central Michigan |