WJ may refer to:
On September 21, 1939 radio station WJSV in Washington, D.C. made an audio recording of its entire 19-hour broadcast day.
WJBK, virtual channel 2 (VHF digital channel 7), is a Fox owned-and-operated television station licensed to Detroit, Michigan, United States.
WJW, virtual and VHF digital channel 8, is a Fox-affiliated television station licensed to Cleveland, Ohio, United States.
WJZ-TV, virtual and VHF digital channel 13, is a CBS owned-and-operated television station licensed to Baltimore, Maryland, United States.
WJZY, virtual channel 46 (UHF digital channel 25), is a Fox owned-and-operated television station serving Charlotte, North Carolina, United States that is licensed to Belmont.
WJLA-TV, virtual and VHF digital channel 7, is an ABC-affiliated television station licensed to the American capital city of Washington, District of Columbia.
WJAC-TV, virtual channel 6 (UHF digital channel 35), is a dual NBC/CW+-affiliated television station licensed to Johnstown, Pennsylvania, United States and serving West-Central Pennsylvania.
WJAX-TV, virtual channel 47 (UHF digital channel 19), is a CBS-affiliated television station licensed to Jacksonville, Florida, United States.
WJXT, virtual channel 4 (UHF digital channel 42), is an independent television station licensed to Jacksonville, Florida, United States.