Supreme Allah (real name Kevin Ketchum) is a fictional character of the HBO drama Oz. He is portrayed by Lord Jamar of hip hop group Brand Nubian.

Prisoner #00K251. Convicted March 22, 2000 - Second degree murder. Sentence: 25 years, eligible for parole in 10.

A Five Percenter, he is serving time for murdering Gray Daniels, a man who laughed at him during a dice game. He often preaches Five Percenter philosophy while simultaneously dealing drugs. It is revealed that Supreme is responsible for the incarceration of Augustus Hill, having revealed Hill's location to the police after they picked him up on an old arrest warrant. As a result, Burr Redding, Hill's adopted stepfather, hates Allah. Despite his numerous enemies, lack of real allies, and his controversial and occasionally contradictory beliefs, Supreme survives numerous murder attempts, though he is killed eventually. It is possible that Ketchum's character and religion are a reference to Kenneth "Supreme" McGriff, a Five Percenter who ran the New York City based Supreme Team drug organization. (Lord Jamar, who portrays the character, is himself a Five Percenter.)