Tracy Lynn Curry (born June 10, 1968), better known as The D.O.C., is an American rapper, songwriter, and record producer. In addition to a solo career, he was a member of the Southern hip hop group Fila Fresh Crew and later collaborated with gangsta rap group N.W.A–where he co-wrote many of their releases–as well as Eazy-E's solo debut album Eazy-Duz-It. He has also worked with Dr. Dre, co-writing his solo debut album, while Dre produced Curry's solo debut album, released by Ruthless Records. He was one of the founders of Death Row Records along with Dr. Dre and Suge Knight.

After Fila Fresh Crew split up in 1988, the D.O.C. went on to pursue a successful solo career. In 1989, he released his debut album, No One Can Do It Better, which reached number-one on the US Top R&B/Hip-Hop Albums chart for two weeks and spawned two number one hits on the Hot Rap Songs chart: "It's Funky Enough" and "The D.O.C. & The Doctor". The album went platinum five years after its release. In late 1989, months after the release of No One Can Do It Better, the D.O.C. suffered a serious car crash that permanently changed his voice. Since his accident, he has released two more albums, Helter Skelter in 1996 and Deuce in 2003. In 2015, he said his voice was fully recovered.