Archibald MacLeish (May 7, 1892 – April 20, 1982) was an American poet, writer, Librarian of Congress, and three-time winner of the Pulitzer Prize. He is closely associated with the Modernist school of poetry, and he was greatly influenced in particular by the poetry of Ezra Pound and T.S. Eliot. Like Pound and Eliot, MacLeish eschewed some of the stricter rules of traditional verse; but throughout his life MacLeish's poetry retained a certain simple lyricism that set him apart from his more experimental colleagues.
Renowned as a teacher, critic, and poet, MacLeish has been sadly underappreciated by subsequent generations of writers, though there remain a handful of poets who discover his poetry and, in it, discover one of the most thoughtful poets in the American canon.