KSWD (100.3 FM, 100.3 The Sound) is an Entercom-owned and -operated radio station licensed to Los Angeles, California, United States. The station currently broadcasts a wide-ranging classic rock format. It has studios on Wilshire Boulevard in the Miracle Mile district of Los Angeles, and its transmitter is located atop Mount Wilson alongside a translator in Newhall, K261AB on 100.1 MHz to help extend KSWD's coverage to the north of the Los Angeles area.
100.3 FM debuted in 1957 as a background music station with the call letters KMLA. Later, it became KFOX-FM, the country sister station to KFOX (1280 AM) in Long Beach.
In 1972, 100.3 FM was purchased by four businessmen who changed the call letters to KIQQ (K100), in an attempt to capitalize on its 100.3 MHz dial location. The next year, with the station's soft rock format failing to gain ratings or billing, KIQQ brought in deposed KHJ heavyweights Bill Drake and Gene Chenault, who contracted to program and manage the station.