"Work It Out" is a funk song written by American singer-songwriter Beyoncé Knowles and The Neptunes members Pharrell Williams and Chad Hugo (who produced the track) for the soundtrack to the 2002 film Austin Powers in Goldmember—in which she plays Foxxy Cleopatra—and was later featured on the non-U.S. editions of Knowles' solo debut album, Dangerously in Love (2003). Released as a single in June 2002, it failed to chart on the U.S. Billboard Hot 100, but did experience moderate success on the Billboard Hot Dance Club Play chart, debuting at number forty-nine and later peaking at number eleven. Nevertheless, it was a relative hit in European countries such as the United Kingdom and Norway, where it reached number seven and number three respectively. The music video for the song was directed by Matthew Rolston. This funky number features Chad Hugo on the saxophone.

"Work It Out" was the first single to be released from the album Feedback by US hip hop group Jurassic 5. The track features vocals by Dave Matthews of the Dave Matthews Band on the chorus. The song was later included on the soundtrack of popular basketball game, NBA Live 07.

"Work it Out" is a 1996 song by British hard rock band Def Leppard from their gold album Slang. It was released as the only single from the album later that year, and reached #6 on the Mainstream Rock charts.