Hüsker Dü () was an American punk rock band formed in Mendota Heights, Minnesota, in 1979. The band's continuous members were guitarist/vocalist Bob Mould, bassist/vocalist Greg Norton, and drummer/vocalist Grant Hart. They first gained notability as a hardcore punk band, and later crossed over into alternative rock. Mould and Hart were the band's principal songwriters, with Hart's higher-pitched vocals and Mould's baritone taking the lead in alternating songs.

The band issued their debut studio album Everything Falls Apart on Reflex Records in 1983 and subsequently released three LPs and an EP on the independent label SST Records, including the critically acclaimed Zen Arcade in 1984. Hüsker Dü signed to major label Warner Bros. Records in 1986 to release their final two studio albums. They disbanded in January 1988. Mould later released two solo albums before forming Sugar in the early 1990s, while Hart released a solo album on SST and later formed Nova Mob.

After their respective bands broke up in the mid-1990s, Mould and Hart continued doing solo work, the latter until his death in 2017. Norton worked as a restaurateur and returned to the recording industry in 2006.