Warren Hamilton Lewis (June 16, 1895-April 9, 1973) was the brother of noted professor and author C. S. Lewis, and served as his secretary for the later years of C. S. Lewis's life. Warren was one of the founding members of the Inklings, an Oxford literary society, and published several books of his own, including The Splendid Century: Life in the France of Louis XIV and Levantine Adventurer: The travels and missions of the Chevalier d'Arvieux, 1653-1697. He also (aided in part by Walter Hooper) edited the first published edition of C. S. Lewis's letters in 1966.