Guy Bates Post (September 22, 1875 – January 16, 1968) was an American character actor who appeared in at least twenty-one Broadway plays and twenty-five Hollywood films over a career that spanned more than fifty years. He was perhaps best remembered in the role of Omar Khayyám in the 1914 stage and 1922 film productions of Richard Walton Tully's Omar the Tentmaker and for his over fifteen hundred performances in John Hunter Booth's 1917 play The Masquerader.