Douglas Bush (1896–1983) was a literary critic and literary historian. He taught for most of his life at Harvard University, where his students included many of the most prominent scholars, writers, and academics of several generations, including Walter Jackson Bate, Neil Rudenstine, Paul Auster and Aharon Lichtenstein.
Bush's textual criticism on Shakespeare and John Milton was widely influential. His English Literature in the Earlier Seventeenth Century, though later overtaken by more theoretically-informed approaches to literary history, remains a standard reference work.