"Who Let the Dogs Out" is a song performed by the Bahamian group Baha Men. Originally released by Anslem Douglas (titled "Doggie"), it was covered by producer Jonathan King who sang it under the name Fat Jakk and his Pack of Pets. He brought the song to the attention of his friend Steve Greenberg, who then had the Baha Men cover the song. The song, released on 26 July 2000, became the band's first and only hit in the United Kingdom and the United States, and it gained popularity after appearing in Rugrats in Paris: The Movie and its soundtrack album. This song is written in the key of C major.

The song peaked at No. 2 on the UK Singles Chart, as well as topping the charts in Australia and New Zealand, and reached the Top 40 in the United States. In Britain, it was championed by DJ John Peel and went on to be the fourth biggest-selling single of 2000, and one of the highest-selling singles of the decade not to reach No. 1. The track went on to win the Grammy for Best Dance Recording on the 2001 Grammy Awards. The song is a part of Bahamian popular culture, and was also the subject of a major lawsuit over copyright ownership that was settled. In 2019, a documentary about the creation of the song was the surprise hit of the SXSW music festival in Austin, Texas.