Stations
- CSN Radio – KKJA
- CSN Radio – KLWL
- CSN Radio – KQDL
- CSN Radio – KTJC
- CSN Radio – WCBX
- CSN Radio – WGWS
- CSN Radio – WKTR
- CSN Radio.- WKQY
- CST Radio
- CStation
- CSX and Norfolk Southern – Callahan area
- CSX and NS Railroad in the greater Montezuma and Oglethorpe area
- CSX CE&D and Subs
- CT Das Radio
- CT Radio
- CT94.4
- Ctb stereo
- CTDT Radio
- CU Radio วิทยุจุฬาฯ
- CUAC FM
- Cuadrante Digital – XETA
- Cuadrante Digital – XHETA
- Cuarentena Radio
- Cuba HE
- Cubania Radio
- Cue Radio – Classics
- Cue Radio – The Mix
- Cuebase-FM – Black
- CUEHIP Radio
- Cuerpo de Bomberos de Temuco
- CUH fm Hospital Radio
- Cuillin FM
- Cujo’s Crypt Radio Live
- Culpeper County, VA Fire, EMS
- CultiRadio
- Cultura AM
- Cultura AM 560
- Cultura FM
- Cultura FM 106,5
- Cultura FM 92,9
- Cultura FM 95.5
- Cultura FM 97,3
- Cultura FM Cuiabá
- Cultura Radio
- Cultura Web Cast
- Cultura Web Radio
- Cultural FM 107.9
- Cultural FM 96.3
- Culture Mixx Radio
- Cumberland, RI Police, Fire, EMS
- Cumbia Villera (la vieja escuela) Radio
- Cumbias Inmortales Radio
- Cumbre 1470AM
- Cupido Radio
- Curicó Radio
- Currambera Stereo
- CurrentFM – WJLZ
- Currituck County, NC Fire, EMS
- Curry Radio – WMLN-FM
- Curtin FM 100.1
- CurtJazz Radio
- CurveRadio
- CUT Brasil
- Cutie 93.3 – WQTY
- Cuttin Tunes Radio
- Cuyabeno 98.1 fm
- Cuyahoga County Skywarn
- Cuyen Radio
- CV 104.3 – KHCV
- CVC La Voz
- CVGM.net
- CVibeRadio
- Cville 107.5 & 1260 – WCHV
- CvsRadio1
- CVUE WorldWide Radio
- CW33 La Nueva Radio Florida
- CWR Network – Fountain of Living Waters Radio
- CX 40 Radio Fénix
- CX 42 Emisora Ciudad de Montevideo
- CX36 Radio Centenario
- CX46 Radio America 1450
- Cyber FM – Caribbean
- Cyber FM Country
- Cyber Vybez Radio
- Cyber-FM – India
- Cyber-FM – Latino
- Cyber-FM – Philippines
- Cyber-FM – Streetz
- Cyber-FM – Xtreme Free4All
- Cyber-FM Radio Rock
- CyberExitos
- CyberFM
- CyberLeyton NonStop
- CyberPinoy Radio
- Cyberspazio Radio
- Cybro Radio Station Blues
- Cybro Radio Station Jazz
- Cygnus Radio
- Cyprus Funk Station
- Cyprus Radio AKS
