Thomas Bailey Aldrich (/ˈɔːldrɪtʃ/; November 11, 1836 – March 19, 1907) was an American writer, poet, critic, and editor. He is notable for his long editorship of The Atlantic Monthly, during which he published works by Charles W. Chesnutt and others. He was also known for his semi-autobiographical book The Story of a Bad Boy, which established the "bad boy's book" subgenre in nineteenth-century American literature, and for his poetry, which included "The Unguarded Gates".