| Abbreviation | Definition |
|---|---|
| C | Creator |
| C | Cult |
| C | Cursed |
| C&MA | Christian and Missionary Alliance |
| C.E. | Christian Endeavo(u)r |
| C.S.B. | Christian Science Board |
| C4 | Child Care Coordinating Council of Detroit/ Wayne County, Michigan |
| CA | Christian Armour |
| CAA | China Aid Association |
| CAAC | Catholic Arts and Academic Competition |
| CABF | Canadian Association for Baptist Freedoms |
| CABI | Congregation Ahavath Beth Israel |
| CABO | Charity And Benefit Organization |
| CACE | Center for Applied Christian Ethics |
| CACH | Capital Area Christian Homeschoolers |
| CACHE | Charlottesville Area Christian Home Educators |
| CACI | Catholic Alumni Clubs International |
| CAD | Christ After Death |
| CAFA | Christians As Family Advocates |
| CAFE | Changing A Friends Eternity |