| KSDW | |
| City: | Temecula, California |
| Above: | Satellite of KWVE-FM, San Clemente |
| Area: | Temecula, California / San Diego County |
| Airdate: | as KRTM |
| Frequency: | 88.9 MHz |
| Format: | Christian radio |
| Erp: | 270 watts |
| Haat: | 924m (3,031feet) |
| Class: | B |
| Facility Id: | 52141 |
| Licensing Authority: | FCC |
| Callsign Meaning: | San Diego's Wave of Living Water (reference to sister station KWVE-FM) |
| Owner: | Calvary Chapel Costa Mesa |
| Licensee: | Calvary Chapel of Costa Mesa, Inc. |
| Sister Stations: | KWVE-FM |
| Coordinates: | 33.3696°N -116.9363°W |
| Webcast: | Listen Live |
| Website: | ksdwradio.com |
KSDW (88.9 FM) is a Christian radio station licensed to Temecula, California, and serving the Temecula Valley and San Diego County. The station is owned and operated by Calvary Chapel Costa Mesa, and studios are co-located in Santa Ana with sister station KWVE-FM.
KSDW's format consists mainly of contemporary worship music but also features Bible teaching programs of churches in the Temecula Valley, greater San Diego, and throughout the nation.