Happy Mondays is an English rock band formed in Salford in 1980. The original line-up was Shaun Ryder (vocals), his brother Paul Ryder (bass), Gary Whelan (drums), Paul Davis (keyboard), and Mark Day (guitar). Mark "Bez" Berry later joined the band onstage as a dancer and percussionist. Rowetta joined as a second vocalist in 1990. They were initially signed to Tony Wilson's Factory Records label.

The group's work bridged the Manchester indie rock music of the 1980s and the emerging UK rave scene, drawing influence from funk, house, and psychedelia to pioneer the Madchester sound. They experienced their commercial peak with the releases Bummed (1988), Madchester Rave On (1989), and Pills 'n' Thrills and Bellyaches (1990), with the latter going platinum in the UK. Happy Mondays disbanded in 1993, and have since reformed several times in subsequent decades.