Rancid is an American punk rock band formed in Berkeley, California in 1991. Founded by Tim Armstrong and Matt Freeman, former members of the band Operation Ivy, Rancid is often credited as being among the wave of bands that revived mainstream interest in punk rock in the United States during the mid-1990s. Over its 33-year career, Rancid has retained much of its original fan-base, most of which was connected to its underground musical roots.

Punk rock is a music genre that emerged in the mid-1970s. Rooted in 1950s rock and roll and 1960s garage rock, punk bands rejected the corporate nature of mainstream 1970s rock music. They typically produced short, fast-paced songs with hard-edged melodies and singing styles with stripped-down instrumentation. Lyricism in punk typically revolves around anti-establishment and anti-authoritarian themes. Punk embraces a DIY ethic; many bands self-produce recordings and distribute them through independent labels.