KCEO
| Broadcast area | Western San Diego County | 
|---|---|
| Frequency | 1000 kHz | 
| Branding | Relevant Radio | 
| Programming | |
| Format | Catholic talk and teaching | 
| Ownership | |
| Owner | Relevant Radio, Inc. | 
| History | |
| First air date | March 13, 1968 | 
| Former call signs | KMLO (1968–January 1986), KKOS (January–April 1986), KVSD (April 1986–1990) | 
| Call sign meaning | K Chief Executive Officer (from former business talk format) | 
| Technical information | |
| Licensing authority | FCC | 
| Facility ID | 67666 | 
| Class | B | 
| Power | 10,000 watts day 900 watts night | 
| Transmitter coordinates | 33°13′58″N 117°16′11″W / 33.23278°N 117.26972°W | 
| Translator(s) | 99.3 K257FV (San Diego) | 
| Links | |
| Public license information  | |
| Webcast | Listen Live | 
| Website | relevantradio.com | 
KCEO (1000 AM) is a non-commercial, listener-supported radio station licensed to Vista, California, and serving San Diego County. The studios are located in Carlsbad, California. It is an owned-and-operated station of Relevant Radio, based in Wisconsin. It airs a Catholic talk and teaching radio format.
KCEO broadcasts by day with 10,000 watts and 900 watts at night. It uses a directional antenna with a four-tower array. The transmitter is off Sagewood Drive in Oceanside, near Guajome County Park. Programming is also heard on 250-watt FM translator K257FV in San Diego at 99.3 MHz.