Robert Keable (6 March 1887 – 22 December 1927) was a British novelist, formerly a missionary and priest in the Church of England. He resigned his ministry following his experiences in the First World War and caused a scandal with his 1921 novel Simon Called Peter, the tale of a priest's wartime affair with a young nurse. The book sold 600,000 copies in the 1920s alone, was referenced in The Great Gatsby, and was cited in a double murder investigation. Fêted in the United States, but critically less than well-received, Keable moved to Tahiti where he continued to write, producing both novels and theological works, until his death at age 40 of kidney disease.