Keith Cozart (born August 15, 1995) better known by his stage name Chief Keef, is an American rapper from Chicago, Illinois. He has signed a major record deal with Interscope Records, and is the CEO of his own record label Glory Boys Entertainment.

His debut album Finally Rich was released on December 18, 2012. He attended Dulles Elementary School and later Banner High School on the city's South Side. He released his debut mixtape The Glory Road on July 9, 2011 and his second mixtape Bang on October 11.

In December 2011, Cozart was arrested on a weapons charge (aggravated unlawful use of a weapon) and put under house arrest at his grandmother's home. While under house arrest, Cozart posted several videos to his YouTube account.

The attention he received grew in the short time between the release of several mixtapes and several of music videos, including "Bang", "3Hunna" and "I Don't Like". After two locally successful mixtapes, "I Don't Like" became a local hit in Chicago.

It also caught fellow Chicago rapper Kanye West's attention, and West organized a remix of the song along with rappers Pusha T, Jadakiss and Big Sean. On July 7, 2012, it was announced that Chief Keef would be performing at the 2012 Lollapalooza music festival.

His debut full-length album Finally Rich was released on December 18, 2012 by Glory Boys Entertainment and Interscope Records, and features guest appearances from 50 Cent, Wiz Khalifa, Lil Reese, Rick Ross, Young Jeezy, and French Montana.