Doris M. Grumbach (née Isaac; July 12, 1918 – November 4, 2022) was an American novelist, memoirist, biographer, literary critic, and essayist. She taught at the College of Saint Rose in Albany, New York, the Iowa Writers' Workshop, and American University in Washington, D.C., and was literary editor of The New Republic for several years. She published many novels highlighting and focusing on gay and lesbian characters. For two decades, she and her partner, Sybil Pike, operated a bookstore, Wayward Books, in Sargentville, Maine.