Farley Keith (born Farley Keith Williams, January 25, 1962, Chicago, Illinois), better known as Farley "Jackmaster" Funk, is a DJ and record producer of Chicago house music. He is notable for producing a number of tracks in the mid and late 1980s. He has recorded and performed under the aliases Farley Keith, Rude Boy Farley Keith, Farley Funkin' Keith.