|Origin||Hermosa Beach, California, United States|
|Years active||1976–1986, 2003|
|Associated acts||Circle Jerks, Descendents, Minutemen, Dos, Gone, Nig Heist, October Faction, Tom Troccoli's Dog, Rollins Band, S.O.A., Chuck Dukowski Sextet, SWA, The Misfits, Redd Kross, DC3|
Black Flag was an American hardcore punk band. They formed in California in 1976 and broke up in 1986. There were many different members in the band, but the leader was Greg Ginn. Ginn was the guitarist and wrote many of the songs.
Black Flag was one of the groups that created the hardcore punk style. They toured the United States and Canada to play many live shows. They influenced many other musicians and fans to make their own hardcore bands. The band's 1981 debut album Damaged has been recognized as a classic punk album and one of the most influential punk records ever made.