Kyle Elihu Onstott (January 12, 1887 – June 3, 1966) was an American novelist, known for his best-selling novel Mandingo (1957), which deals with slavery on an Alabama plantation with the fictional name of Falconhurst in the 1830s. The book was made into a 1961 play and film of the same name, which was released in 1975. A sequel and a series of other novels followed, mostly written with . Outside the usual setting of their work was the 1966 novel Child of the Sun, recounting the scandalous reign of the homosexual Roman emperor Elagabalus.