Duke Tumatoe, born William “Bill" Severen Fiorio in 1947, is an American blues guitarist, vocalist and songwriter. He has gigged with Muddy Waters, Bo Diddley, B.B. King, Willie Dixon, Buddy Guy, John Fogerty and George Thorogood. He was a founding member of arena-rock giants REO Speedwagon. He has released fifteen albums as the bandleader of Duke Tumatoe & The All-Star Frogs and Duke Tumatoe & The Power Trio. His 1988 live album I Like My Job was produced by John Fogerty.