WDEF

WDEF is a broadcast call sign associated with media outlets in Chattanooga, Tennessee, United States. In the United States, call signs beginning with W are assigned to stations east of the Mississippi River, and WDEF has long been a local identifier in the Chattanooga media market.

The best-known use of the WDEF call letters is WDEF-TV, a television station licensed to Chattanooga. WDEF-TV operates as a local television outlet in the market and has historically been affiliated with a major network, serving as a source of local news, sports, and emergency information for the Tennessee Valley area. Over the decades, the station has been owned by several broadcasting groups and has played a central role in the area's television landscape.

The WDEF call letters were originally associated with a local radio station, reflecting a common practice of transferring call signs between broadcasting services within a market. When television arrived, the WDEF brand was adopted by the new TV outlet, creating a unified local identity across radio and television. Through changes in ownership and branding, WDEF has remained a recognizable element of Chattanooga’s broadcast history.

See also: List of television stations in Tennessee; List of radio stations in Chattanooga.