KVYN (99.3 MHz) is a commercial FM radio station licensed to Saint Helena, California, and serving the Napa Valley and Wine Country of Northern California.

The station broadcasts an adult album alternative (AAA) radio format and is owned by licensee Wine Down Media LLC.

[2] The radio studios and offices are located at 135 Gasser Drive, Suite D in Napa, California.

[3] The station was founded by Thomas L. Young and initially signed on the air in 1975.

[6] The station is also heard in Calistoga, California, through an FM translator at 103.5 MHz.