Cyril Nathaniel "Spider" Haynes (born 1915 in the Panama Canal Zone; died 1996) was an American jazz pianist and arranger.
From the end of 1943 he played with Roy Eldridge, then in the trio of Cedric Wallace and with Frankie Newton, George James, and Barney Bigard.
In 1945 he recorded under own name for the Label Comet; His co-players included Dick Vance, Don Byas, Al Casey, John Levy, and Harold "Doc" West.
He also traveled with Cab Calloway while performing for the halftime shows with the Harlem Globettotters Haynes had a son in July 1953.
He worked with names such as Billie Holiday, Lena Horne, Diana Washington, Peg Leg Bates, Moms Mabelly.