| KBSU | |
| City: | Boise, Idaho |
| Area: | Boise metropolitan area |
| Branding: | Boise State Public Radio |
| Translators: | (see article) |
| Airdate: | 1977 (at 90.1) (originally carrier current 1957-1976) |
| Format: | Classical music |
| Erp: | 17,500 watts |
| Haat: | 827 meters |
| Class: | C |
| Facility Id: | 6325 |
| Callsign Meaning: | Boise State University |
| Former Frequencies: | 90.1 MHz (1977–1982) 91.3 MHz (1982–1988) |
| Owner: | Boise State University |
| Sister Stations: | KBSX |
| Webcast: | KBSU Webstream KBSU-HD2 Webstream |
| Website: | boisestatepublicradio.org |
| Licensing Authority: | FCC |
KBSU (90.3 FM) is a radio station licensed to Boise, Idaho. The station is owned by Boise State University, and is the flagship affiliate of Boise State Public Radio's "Music" network.
The station airs classical music and other entertainment programming from American Public Media and Public Radio International.
See main article: Boise State Public Radio.
KBSU's programming is repeated on KBSM in McCall, Idaho. The station's signal is also relayed by the following translator stations.