Circle Jerks is a hardcore punk band formed circa 1979 in Hermosa Beach, California, United States. It was formed by Black Flag's original singer, Keith Morris, and future Bad Religion guitarist Greg Hetson. They were among the preeminent punk bands of the L.A. scene in the early 1980s.
The band broke up and reformed twice, sometimes with different bass players and/or drummers. They disbanded for the first time after the release of their fifth album, 1987's VI, as Hetson decided to continue touring and releasing a number of albums with Bad Religion.