Brett Gurewitz American guitarist and songwriter (Bad Religion)
Brett W. Gurewitz (born May 12, 1962), nicknamed Mr. Brett, is an American musician and record producer best known as the lead guitarist of Bad Religion. He is also the owner of the music label Epitaph Records and a number of sister labels. He has produced albums for Bad Religion as well as Epitaph Records labelmates NOFX, Rancid, and Pennywise, among others. Gurewitz also had a project called Error, which also featured Atticus Ross, Leopold Ross, and Greg Puciato. He is also the co-founder of comic book and graphic novel publisher, Black Mask Studios.

Gurewitz founded Bad Religion in 1980 with Greg Graffin, Jay Bentley and Jay Ziskrout. After releasing two albums and one EP, Gurewitz left Bad Religion in 1983, but rejoined three years later, and recorded five more albums with the band before they signed to Atlantic Records in 1993. The success of his record label Epitaph prompted Gurewitz to leave Bad Religion once again in 1994, and run the label on a full-time basis. During his hiatus from Bad Religion, he released the "Hate You" single in 1996 with his one-off project Daredevils, and entered a period of drug addiction. By 1999, Gurewitz had successfully completed drug rehabilitation, and two years later he rejoined Bad Religion, appearing on six more studio albums with them.