KYZK

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

{{Infobox radio station

| name = KYZK

| logo =

| city = Sun Valley, Idaho

| area =

| branding = Mountain Country 107.5

| frequency = 107.5 MHz

| repeater =

| airdate = 2000

| format = Classic country

| erp = 2,500 watts

| haat = 583 meters

| class = C1

| facility_id = 1164

| coordinates = {{coord|43|38|37|N|114|23|50|W|region:US_type:city}}

| callsign_meaning =

| former_callsigns =

| affiliations = ABC Radio

| owner = Richard Mecham

| licensee = Magic Valley Media, LLC

| sister_stations =

| webcast =

| website =

| licensing_authority= FCC

}}

KYZK (107.5 FM, "Mountain Country 107.5") is a radio station broadcasting a classic country format. Licensed to Sun Valley, Idaho, United States, the station is currently owned by Richard Mecham, through licensee Magic Valley Media, LLC, and features programming from ABC Radio.{{cite web|url=http://www.fcc.gov/fcc-bin/fmq?call=KYZK |title=KYZK Facility Record |work=United States Federal Communications Commission, audio division }}

On November 16, 2020, KYZK changed their format from contemporary hit radio to classic country, branded as "Mountain Country 107.5".[https://radioinsight.com/headlines/201427/mountain-country-debuts-in-sun-valley/ Mountain Country Debuts In Sun Valley] Radioinsight - November 17, 2020