Cornell Luther Dupree (December 19, 1942 – May 8, 2011) was an American jazz and R&B guitarist. He worked at various times with Aretha Franklin, Bill Withers, Donny Hathaway, King Curtis and Steve Gadd, appeared on David Letterman, and wrote a book on soul and blues guitar: Rhythm and Blues Guitar. He reportedly recorded on 2,500 sessions.