M. Barnard Eldershaw was the pseudonym used by the twentieth-century Australian literary collaborators Marjorie Barnard (1897–1987) and Flora Eldershaw (1897–1956). In a collaboration that lasted two decades from the late 1920s to the late 1940s, they published 5 novels, 3 histories, a radio drama, a collection of short stories, and several collections of critical essays and lectures.