WWJ may refer to:
- In broadcasting, the following stations in Detroit, Michigan, United States
- Current stations
- WWJ (AM), a radio station (950 AM) with a news/talk format
- WWJ-TV, a CBS owned and operated television station (channel 62 virtual/44 digital)
- Stations formerly known as WWJ
- WXYT-FM, a radio station (97.1 FM) that was known as WWJ-FM from 1948 to 1981
- WDIV-TV, an NBC affiliated television station (channel 4 virtual/45 digital) that was known as WWJ-TV from 1947 to 1978
- Other
- Wireless Watch Japan
- Water Well Journal
- World Wind Java release