WTTG, channel 5, is an owned-and-operated television station of the Fox Broadcasting Company, located in the American capital city of Washington, D.C. The station's studio and office facility, and transmitter are co-located in the Tenleytown neighborhood of Washington.

WTTG's sister station is WDCA (channel 20), forming a duopoly owned by News Corporation, Fox Broadcasting's parent company.

The station traces its history to May 19, 1945, when television set and equipment manufacturer Allen B. DuMont founded W3XWT, the second experimental station in the nation's capital (after NBC's W3XNB, forerunner to WRC-TV).

Later in 1945, DuMont Laboratories began a series of experimental coaxial cable hookups between W3XWT and its other television station, WABD in New York City (later WNEW-TV and now WNYW). These hookups were the beginning of the DuMont Television Network, the world's first licensed commercial television network. DuMont began regular network service in 1946. Almost a year later on January 3, 1947, W3XWT received a commercial license -- the first in the nation's capital -- as WTTG. The station was named for Thomas T. Goldsmith, Jr., the DuMont network's chief engineer and a close friend of Dr. DuMont.