KWBU-FM (103.3 MHz), is a public non-commercial FM radio station in Waco, Texas, serving the greater Brazos Valley region.

The station's Federal Communications Commission license is held by the Brazos Valley Public Broadcasting Foundation, a nonprofit community organization.

KWBU-FM first signed on in 2000, originally on 107.1 MHz (now the location for Regional Mexican music station KLZT).

[3] When sister PBS member station KWBU-TV closed its doors in 2010 due to budget shortfalls, KWBU-FM remained in operation.

Now located at 103.3 MHz, it recently boosted its power to 3,200 watts from a 453-foot (138 meter) tower near Route 6 across from Richland Mall in Waco.