"Causing a Commotion" is a song by American singer Madonna from the soundtrack to the 1987 film Who's That Girl. It was released as the album's second single on August 25, 1987 by Sire Records. Its Silver Screen Single Mix later appeared on the 1991 UK compilation EP The Holiday Collection. Written and produced by Madonna and Stephen Bray, the song was inspired by Madonna's relationship with then husband Sean Penn, and his abusive and violent nature. Containing a dance-oriented, up-tempo groove, the song begins with the chorus and is accompanied by a four-note descending bassline and staccato chords in the verse.

Since its release, the song has received mixed reviews by critics. It became a top-ten hit in the United States, Australia, Canada, Ireland, Italy, New Zealand, Sweden and the United Kingdom, and topped the Billboard US dance chart. Madonna performed the song on the Who's That Girl World Tour – which was transmitted via satellite to the 1987 MTV Video Music Awards – and the Blond Ambition World Tour in 1990. The performances were included in the home video release of the tours.

In 1986, Madonna was shooting for her third motion picture Who's That Girl, known at the time as Slammer. Needing songs for the soundtrack of the movie, she contacted Patrick Leonard and Stephen Bray, with whom she had written and produced her third studio album True Blue in 1986. The song was written and produced by Madonna and Bray for the film's soundtrack. It was inspired by her then husband Sean Penn and their often tumultuous relationship. Madonna felt that her marriage to Penn was on the verge of breaking up, due to Penn's abusive and violent nature. That translated as the inspiration behind the song. In a Rolling Stone article dated September 10, 1987, Madonna spoke about Penn's impact on her life,

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