JJJ may refer to:
Triple J, Australian radio station JJJ, the production code for the 1971 Doctor Who serial The Dæmons J. Jonah Jameson, a fictional character created by Stan Lee and Steve Ditko J. Jonah Jameson (2002 film series character), the Sam Raimi Spider-Man trilogy and Marvel Cinematic Universe versions Jaren Jackson Jr. (born 1999), American basketball player Jesse Jackson, Jr. (born 1965), American politician
See also 3J (disambiguation) Jing-Jin-Ji, a metropolitan region of China