KASB

{{Use American English|date=February 2025}}

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

{{Infobox radio station

| name = KASB

| logo =

| city = Bellevue, Washington

| area = Seattle metropolitan area

| branding =

| airdate =

| frequency = 89.9 MHz FM

| format = Freeform

| power =

| erp = 60 watts

| haat = 10 meters

| class = D

| facility_id = 4631

| coordinates =

| callsign_meaning =

| former_callsigns =

| owner = Bellevue School District #405

| licensee =

| sister_stations =

| webcast =

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

| affiliations =

| licensing_authority= FCC

}}

KASB (89.9 FM) is a high school radio station broadcasting a Freeform radio format and provides high school student oriented music and news. Licensed to Bellevue, Washington, United States, it serves the Bellevue area. The station is currently owned by Bellevue School District #405.