Rancid is an American punk rock band formed in 1991 in Albany, California, by Matt Freeman and Tim Armstrong, both of whom previously played in ska punk group Operation Ivy. The band is credited with helping to revive mainstream popular interest in punk rock in the United States during the mid-1990s.

Rancid includes Armstrong on guitar and vocals, Freeman on bass and vocals, Lars Frederiksen on guitar and vocals, and Branden Steineckert on drums. The band was formed by Armstrong, Freeman, and former drummer Brett Reed, who left the band in 2006 and was replaced by Steineckert. Frederiksen joined Rancid in 1993 when the band was searching for a second guitar player.

To date, Rancid has released six studio albums, one split, one compilation, two EPs, a series of live online-only albums, and has been featured on countless compilations. The band rose to fame in 1994 with their second album, Let´s Go, featuring the single "Salvation". In the following year, Rancid released their highly successful album ...And Out Come the Wolves, which produced their best-known hits "Roots Radicals", "Ruby Soho" and "Time Bomb", and was certified gold and platinum by the RIAA. Their most recent studio album, Indestructible, was released in 2003. The band recently finished recording their seventh album, Let the Dominoes Fall, to be released on June 2, 2009.