"Mofo" is a song by U2. It is the third track on the band's 1997 album Pop and it was released as the album's final single on 8 December 1997. The song was partially written about Bono's mother, who died when he was 14 years old. Other songs which Bono wrote about his mother include "Lemon," "I Will Follow," "Iris (Hold Me Close)" and "Tomorrow." Andrew Unterberger of Stylus Magazine considers the song to be "the only legitimate evidence" of U2's supposed dance-oriented direction on the album.

"Mofo" opened every concert from the 1997-1998 PopMart Tour. Although the studio version released on the album was more techno-oriented, live performances had an increased rock arrangement. It appears in the concert film PopMart: Live from Mexico City and also on Hasta la Vista Baby!, a live album from the same show.

British electronica band Underworld also recorded a remix that was never released.

All lyrics written by Bono and The Edge; all music composed by U2.

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