KDNA (102.5 FM) was a St. Louis, Missouri freeform non-commercial community radio station from February 8, 1969, until sometime in 1972. It billed itself as "Radio Free St. Louis". The KDNA call letters are currently used by a different station, a Spanish language station at 91.9 FM in Yakima, Washington, and the 102.5 FM frequency in St. Louis is currently occupied by a commercial station with the call letters KEZK-FM which broadcasts in the "Adult Contemporary Format".