Three 6 Mafia (formerly Triple Six Mafia and before that Backyard Posse) is an Academy Award-winning[2] American rap group originating from Memphis, Tennessee. Formed in 1991 by DJ Paul, Lord Infamous, and Juicy J, they shortly thereafter recruited fellow Memphis rappers Koopsta Knicca, Gangsta Boo, and Crunchy Black. The group also frequently collaborates with Project Pat (Juicy J's older brother). Their 2005 song "It's Hard out Here for a Pimp" won Best Original Song at the 78th Academy Awards.

The group released their debut underground album Mystic Stylez in 1995 through Prophet Entertainment, a record label they created but have since relinquished control over. Their musical style—which initially featured dark, menacing beats with equally gritty lyrics—has since moved to a more mainstream sound. The group has also had numerous lineup changes, and now consists only of original members DJ Paul and Juicy J. It is unknown if Lord Infamous is back with the group on a full-time basis. Nonetheless, they have cultivated a sizable and diverse cult following that has only increased since their Oscar win. DJ Paul's new solo album Scale-A-Ton was released May 5, 2009, and Juicy J's solo album Hustle Till I Die was released June 16, 2009. Their latest album entitled Laws of Power was set for release in January but has been pushed back to June 29, 2010.