KSDW

{{for|the Japanese television station that used the KSDW-TV callsign from 1959 to 1972|Okinawa Television}}

{{Use mdy dates|date=January 2025}}

{{Infobox radio station

| name = KSDW

| city = Temecula, California

| above = Satellite of KWVE-FM, San Clemente

| logo =

| area = Temecula, California / San Diego County

| branding =

| airdate = {{start date|1979|11|5}} as KRTM

| frequency = 88.9 MHz

| translators = {{ubl|{{Radio Relay|96.1|K241CH|San Diego}}|{{Radio Relay|96.9|K245AI|San Pasqual}}}}

| format = Christian radio

| erp = 270 watts

| haat = {{convert|924|m|ft|sp=us}}

| class = B

| facility_id = 52141

| licensing_authority = FCC

| callsign_meaning = San Diego's Wave of Living Water (reference to sister station KWVE-FM)

| former_callsigns = {{ubl|KRTM (1979–1984)|KRRR (1984–1989)|KRTM (1989–2010)}}

| owner = Calvary Chapel Costa Mesa

| licensee = Calvary Chapel of Costa Mesa, Inc.

| sister_stations = KWVE-FM

| coordinates = {{coord|33.36955|-116.93633|format=dms|type:landmark_region:US-CA|display=inline,title}}

| webcast = [http://player.listenlive.co/28561 Listen Live]

| website = [http://www.ksdwradio.com ksdwradio.com]

| affiliations =

}}

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.