"My Boo" is a duet between American R&B singers Usher and Alicia Keys, written by Usher, Keys, Jermaine Dupri, Adonis Shropshire, and Manuel Seal, Jr.. The song was released as the album's fourth single in 2004. Set over a hip hop-style track, it was produced by Dupri and No I.D. It was included on the re-release of Usher's fourth studio album, Confessions (2004).

The song received positive reviews from critics, and has garnered awards. The single stayed on top of the Billboard Hot 100 for six weeks, making it the third most-successful single from the album after "Yeah!" and "Burn", respectively. It was also ranked as the 36th biggest song of the 2000–2009 decade in the US.

Usher and Alicia Keys had previously collaborated with the remix of Keys' 2004 single "If I Ain't Got You", which was released in the United Kingdom. During the production of Usher's fourth studio album, Confessions, they thought of various female singers to pair him with on the song. Usher and Kortney Kaycee Leveringston's rare demo version can be found floating on the Internet. Although it was and still is widely believed that it was Beyoncé. However, Jermaine Dupri, who co-wrote the song including Usher's number-one hits "Yeah!", "Burn", and "Confessions Part II", felt that he had established good relationship with Keys since she had worked with him and Usher.

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