Gang of Four are an English post-punk band, formed in 1976 in Leeds. The original members were singer Jon King, guitarist Andy Gill, drummer Hugo Burnham, and bass guitarist Dave Allen. There have been many different line-ups including, among other notable musicians, Sara Lee, Gail Ann Dorsey, and David Pajo. After a brief lull in the 1980s, different constellations of the band recorded two studio albums in the 1990s. Between 2004 and 2006 the original line-up reunited; Gill toured using the name between 2012 and his death in 2020. In 2021, the band announced that King, Burnham, and Sara Lee would be reuniting for a US tour in 2022 with David Pajo on guitar. They continued to perform live, including at the Cruel World Festival in Pasadena, California; headlining Luna Fest in Coimbra, Portugal, and a UK Tour in October 2023. They then announced that their "Long Goodbye" tour in 2025 would be their last headlining tour of the US and Europe. For this tour, King and Burnham were joined by Ted Leo on guitar and Gail Greenwood on bass.

The band play a stripped-down mix of punk rock, funk and dub, with a lyrical emphasis on the social and political ills of society. Gang of Four are widely considered one of the leading bands of the late 1970s/early 1980s post-punk movement. Their debut album, Entertainment!, was ranked by Rolling Stone as the fifth greatest punk album of all time and at number 483 in their list of the 500 Greatest Albums of All Time. In 2004, the album was listed by Pitchfork Media as the 8th best album of the 1970s and, in 2020, by Pop Matters as "Best Post Punk album ever". Entertainment! continues to be influential, and was voted 49th in Rolling Stones' 2023 poll of "100 Best Debut Albums of All time". Their early 80s albums (Songs of the Free and Hard) found them softening some of their more jarring qualities, and drifting towards dance-punk and disco. David Fricke of Rolling Stone described Gang of Four as "probably the best politically motivated band in rock & roll."