| CB | Citizen Band Radio Communication |
| CB | Citizens Band radio |
| CBDE | FM-105.1, Brochet, Manitoba |
| CBDI | AM-860, Fort Smith, Northwest Territories, Canada; FM-103.5 FM, Poplar River, Manitoba, Canada |
| CBV | FM-106.3, Quebec City, Quebec |
| CFCB | Coming From Corner Brook |
| CFCD | FM-98.5, Dryden, Ontario, Canada |
| CFCO | AM-630, FM-92.9, Coming From Chatham Ontario, Chatham, Ontario |
| CFMX | FM-96.3, Toronto, Ontario, Canada |
| CFNP | FM-90.1, Naicatchewenin, Ontario, Canada |
| CFO | chicken fat operator |
| CFOB | FM-93.1, Fort Frances, Ontario, Canada |
| CFRO | FM-102.7, Vancouver, British Columbia |
| CHFI | FM-98.1, Toronto, Ontario |
| CHFI | FM-98.1, Toronto, Ontario, Canada |
| CHIRP | The Chicago Independent Radio Project |
| CHMR | CHMR 93.5 FM - Campus and Community Radio in St. John's, NL |
| CHRB | AM-1140, High River, Alberta, Canada (former AM-1280) |
| CHRC | AM-800, Quebec City, Quebec |
| CHST | FM-102.3, London, Ontario |