KSTO (95.5 FM), branded as K-Stereo 95.5, is an adult contemporary radio station serving the island of Guam, licensed to Hagåtña.
As a prominent radio station on the island of Guam, KSTO (95.5 FM) is recognized by its branding as K-Stereo 95.5 and provides adult contemporary music to the local audience, based in Hagåtña.