Circle Jerks were an American hardcore punk band, formed in 1979 in Los Angeles, California. The group was founded by former Black Flag vocalist Keith Morris and Red Cross guitarist Greg Hetson. They were among the preeminent hardcore punk bands of the LA scene in the late 1970s.
The band broke up and re-formed three times, sometimes with different bassists 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 albums with Bad Religion. They reunited around 1994 and recorded a reunion album, Oddities, Abnormalities and Curiosities, during the following year, followed by a tour. After that, the Circle Jerks once again parted ways as Hetson was still involved in Bad Religion. They reunited again c. 2001, but as of 2010, are on hiatus.