Kenneth "Supreme" McGriff (born September 19, 1960) is an American convicted former drug lord and gangster from New York City.

In 1987, McGriff was arrested following a joint state and federal investigation and in 1989 pleaded guilty to engaging in a Continuing Criminal Enterprise.

After being released from prison on parole in 1994, McGriff tried his hand at cinematography, seeking help from Irv Gotti to film a movie based on the Kenyatta series' novel Crime Partners.

[3][4] On February 1, 2007, McGriff was convicted of murder-for-hire at a federal court in the Eastern District of New York on charges that he paid $50,000 to have two rivals (Eric "E-Moneybags" Smith and "Big Nose" Troy Singleton) killed in 2001.

In 2011, he was transferred to the United States Penitentiary, Lee, a high-security federal prison in Pennington Gap, Virginia.