“Who Is It” is a song by American songwriter and recording artist Michael Jackson. “Who Is It” was released by Epic Records on August 31, as the fifth single from Jackson’s eighth studio album, Dangerous in 1991. The song was written and composed by Jackson.

The song’s lyrics pertain to despair over being left by someone you love; some critics noted a comparison to the lyrics of the song to Jackson’s single, “Billie Jean” from the album Thriller.

The song was not performed by Jackson on any of his world concert tours. The instrumental version of the song was supposed to be performed during the This Is It concerts which were canceled due to Jackson’s death.

As part of the promotion for the song, two music videos were released in the same year. The single was released only two days after Jackson’s 34th birthday.

Adam Gilham of Sputnikmusic praised the song in his review for Dangerous, describing it as a “real fan favorite and a criminally underrated song” and rated the album a “5/5”, and added that it was “a very dark, introspective song about wondering who his girl cheated on with ‘Is it my brother?’ etc.” and praised that “Who Is It” is “really superb, particularly the chorus”.