"Barbie Girl" is a song by Danish dance-pop group Aqua. It was released in April 1997 as the third single from the group's debut studio album, Aquarium (1997). The song was written by band members Søren Rasted, Claus Norreen, René Dif, and Lene Nystrøm, and was produced by the former two alongside Johnny Jam and Delgado. It was written after Rasted saw an exhibit on kitsch culture in Denmark that featured Barbie dolls.
The song topped the charts worldwide, particularly in European countries such as the United Kingdom, where it was a number-one hit for four weeks and remains one of the best-selling singles of all time. It also reached number two in the group's homeland and peaked at number seven on the US Billboard Hot 100. It is Aqua's most popular work and was also performed as the interval act in the Eurovision Song Contest 2001. Mattel accused Aqua's label of diluting the image of Barbie, leading to the controversial lawsuit Mattel, Inc. v. MCA Records, Inc.. Twenty-five years later, Mattel licensed the song in the 2023 film Barbie and additionally sampled it for a new song, "Barbie World".
The lyrics of the song are about Barbie and Ken, the dolls made by Mattel. Both the song and its music video feature Lene Nystrøm as Barbie and René Dif as Ken. As such, the lyrics drew the ire of Barbie's corporate owners, and a lawsuit was filed by Mattel.
A footnote on the back of the Aquarium CD case precisely stated that "The song 'Barbie Girl' is a social comment and was not created or approved by the makers of the doll." "Barbie Girl" is written in the key of C-sharp minor and has a tempo of 130 beats per minute.
"Barbie Girl" received critical acclaim. Larry Flick from Billboard wrote that "with her squeaky, high-pitched delivery, Lene Grawford Nystrøm fronts this giddy pop/dance ditty as if she were Barbie, gleefully verbalizing many of the twisted things people secretly do with the doll." He noted that "at the same time, she effectively rants about the inherent misogyny of Barbie with a subversive hand", adding that René Dif is an "equally playful and biting presence, as he embodies male counterpart Ken with an amusing leer.