Brooke Valentine (born October 5, 1985 in Houston, Texas), is an American R&B singer-songwriter. She started her musical career as a member of the female group Best Kept Secret. To pursue a solo career, she moved to Los Angeles, California and signed to Subliminal Entertainment/Virgin Records. She released her debut album Chain Letter in March of 2005. It sold 340,000 copies in the US. The album features her hit debut single, "Girlfight" released late 2004, in a collaboration with rappers Big Boi and Lil Jon, a song about tension between two girls which ends up in a catfight.

The first single from her second album Physical Education was "D-Girl" ("Dope Girl"), which did not chart, along with a second single, "Pimped Out", in November 2006. The release of the album was canceled during the Capitol & Virgin Records merge in 2007, the future of the project is currently unknown.