KVYN (99.3 FM) is a commercial radio station licensed to Saint Helena, California, United States, serving the Napa Valley and Wine Country of Northern California. The station broadcasts an adult album alternative (AAA) format and is owned by licensee Wine Down Media LLC. The studios are located in Napa while the transmitter is sited off Silverado Trail in Yountville.
History

The station was founded by Thomas L. Young and initially signed on the air in 1975.
In May 2017 an announcement was made that the station along with sister station KVON had been sold by Wine Country Broadcasting to Wine Down Media. The transaction was consummated on August 1, 2017.
Translator station
The station is also heard in Calistoga, California, through an FM translator at 103.5 MHz.
| Call sign | Frequency | City of license | FID | ERP (W) | HAAT | Class | FCC info |
|---|---|---|---|---|---|---|---|
| K278AH | 103.5 FM | Calistoga, California | 84736 | 80 | −186 m (−610 ft) | D | LMS |