Harry James Smith (May 24, 1880 – March 16, 1918) was an American playwright and novelist. His best known plays include A Tailor-Made Man, first produced in 1917 and adapted into films of the same name in 1922 and 1931. His 1913 play Blackbirds was also adapted into films. Educated at Williams College and Harvard University, he also studied biology, taught briefly at Oberlin University and was an editor at The Atlantic Monthly before turning to writing full-time. He was killed in a traffic collision in British Columbia while collecting peat moss for its use in surgical dressings.