KPBX-FM (91.1 MHz) is a non-commercial, listener-supported, public radio station in Spokane, Washington. It airs news, talk and information programs on weekday morning and afternoon drive times, with a mix of music shows featuring classical, jazz, blues, folk and other genres the rest of the day, and the BBC World Service overnight. KPBX-FM, along with sister stations 91.9 KSFC and 90.3 KPBZ, are owned and operated by Spokane Public Radio.
KPBX-FM is a Class C station. It broadcasts with an effective radiated power (ERP) of 56,000 watts. Its transmitter tower is off East Henry Road in Spokane Valley. Through seven full-power repeaters and six translators, it reaches listeners in eastern Washington, northeastern Oregon, northern Idaho, western Montana and southern British Columbia.