KDTV-DT, virtual channel 14 (UHF digital channel 51), is a Univision owned-and-operated television station located in San Francisco, California, United States. The station is owned by Univision Communications, as part of a duopoly with UniMás owned-and-operated station KFSF-DT (channel 66). The two stations share studios located at the 50 Fremont Center building in San Francisco's Financial District, KDTV's transmitter is located on Mission Peak in Fremont. The station's signal is relayed on Class A digital translator KDTV-CD (channel 28) in Santa Rosa.
The station first signed on the air on August 13, 1975 as an affiliate of the Spanish International Network (the predecessor of Univision), broadcasting on UHF channel 60; it was the Bay Area's first exclusively Spanish-language television station. It was originally owned by a local group headed by Reynold Anselmo.
In 1979, KDTV reached a deal with San Mateo-based PBS member station KCSM-TV to transfer its full-power color facilities to that station; on March 5 of that year, KCSM and KDTV swapped transmitting facilities and channel assignments: KCSM moved to channel 60 and began transmitting from atop San Bruno Mountain's Radio Peak, while KDTV moved to UHF channel 14 and began transmitting from Mission Peak.