KTOH (99.9 FM) is a radio station licensed to Kalaheo, Hawaii.

Owned by H Hawaii Media, it broadcasts a country music format serving Kauaʻi.

The station was assigned the call sign KAYI on November 10, 1997.

On November 7, 2000, the station changed its call sign to the current KTOH.

[2] The station operates two HD Radio subchannels, classic hits Sunny 101.3, and active rock 107.9 The X.