The Planet of Peril, later republished as Planet of Peril, is a 1929 science fiction novel by Otis Adelbert Kline. Originally serialized in six parts in Argosy All-Story Weekly during the summer of 1929, it was published in hardcover later that year by A. C. McClurg and reissued in a lower-price edition by Grosset & Dunlap. It was revived in 1961 as an Avalon Books hardcover and saw its only mass market paperback edition from Ace Books in 1963. The later editions, well after Kline's death, were revised and shortened.