Kevin Mark DuBrow (October 29, 1955 – c. November 19, 2007) was an American singer, best known as the lead vocalist of the heavy metal band Quiet Riot from 1975 until 1987, and again from 1993 until his death in 2007.

Kevin DuBrow was born to Laura and Alvin Dubrow. He was raised in Los Angeles with his younger brother, Terry, who went on to become a plastic surgeon and TV personality. At age 13, Kevin and his family eventually settled in the Los Angeles neighborhood of Van Nuys. DuBrow was raised Jewish and had the nickname "Butch" growing up.

DuBrow learned to play 12-string guitar, and his first band consisted of 11-year-olds who played only one gig, to an audience of senior citizens who were not particularly fond of rock music. By the time he was in his mid-teens, he had developed an appreciation for a number of British rock acts including the Small Faces, Queen, Spooky Tooth, Rod Stewart and Humble Pie. Singer Steve Marriott would leave the biggest impact on DuBrow and act as a compass in his musical career.

DuBrow enjoyed a hobby of photography in his teenage years, often taking photos at rock 'n roll concerts from 1969 to 1975. He became proficient enough as a photographer that he was soon selling his photos to rock magazines for publication, including Rock and Guitar Player magazine. Among the acts he photographed were Jeff Beck, Robin Trower, and Mott the Hoople.

Through his photography work, he became friends with producer Ron Sobol, and the two traded photographs that they shot at concerts. Not long after Dubrow photographed Rod Stewart at a concert in 1970, he said he realized he wanted to be on the other side of the lens. He once commented: "Shooting concerts is what made me become a singer. I saw Rod Stewart in 1970. I was taking pictures, and I thought, 'Wow, I want to be up there! I don't wanna be behind the camera.'"

Quiet Riot was formed by Randy Rhoads and bassist Kelly Garni (who would later be replaced by Rudy Sarzo) in 1975, who recruited DuBrow and drummer Drew Forsyth. This lineup disbanded in 1979 when Rhoads went on to join Ozzy Osbourne's band, with Rhoads personally enlisting Greg Leon as his replacement. For a time the band's name was changed to DuBrow, which had a rotating lineup of members including Leon, Chuck Wright, Frankie Banali, with brothers Tony and Carlos Cavazo.

After the death of Rhoads in a plane crash in 1982, while on tour with Osbourne, DuBrow changed the name of the band back to Quiet Riot. Rudy Sarzo, who had also joined Ozzy Osbourne, left Osbourne's band and rejoined Quiet Riot shortly before the release of Metal Health, which went to the top of the charts, making Quiet Riot the first metal band to achieve number one status on their (U.S. release) debut album. Their singles included "Cum on Feel the Noize" (originally written and recorded by English band Slade in 1973), and "Metal Health (Bang Your Head)".

In February 1987, DuBrow was fired from Quiet Riot. “It wasn’t the band that wanted him out,” said drummer Frankie Banali in 2013. “It was management and the label. But it took the band to make the change.” However, DuBrow had a habit of publicly bad-mouthing other bands, which alienated a lot of musicians and fans, and also caused problems for Quiet Riot members (bassist Rudy Sarzo was famously punched in the face by Ozzy Osbourne after DuBrow publicly insulted the English singer). Another factor cited in the decision to fire DuBrow was his excessive drinking and drug use. “We all indulged," said Banali, "But Kevin could be told nothing by no one, and his lifestyle choices had made it impossible for us to continue with him.”