James Maurice Thompson was an American novelist, poet, essayist, archer and naturalist.

Frederick Schiller Faust was an American writer known primarily for his Western stories using the pseudonym Max Brand. He also created the popular fictional character of young medical intern Dr. James Kildare for a series of pulp fiction stories. His Kildare character was subsequently featured over several decades in other media, including a series of American theatrical movies by Paramount Pictures and Metro-Goldwyn-Mayer (MGM), a radio series, two television series, and comics. Faust's other pseudonyms include George Owen Baxter, Evan Evans, George Evans, Peter Dawson, David Manning, John Frederick, Peter Morland, George Challis, Peter Ward, Frederick Faust and Frederick Frost. As George Challis, Faust wrote the "Tizzo the Firebrand" series for Argosy magazine. The Tizzo saga was a series of historical swashbuckler stories, featuring the titular warrior, set in Renaissance Italy.

Max Forrester Eastman was an American writer on literature, philosophy and society, a poet and a prominent political activist. Moving to New York City for graduate school, Eastman became involved with radical circles in Greenwich Village. He supported socialism and became a leading patron of the Harlem Renaissance and an activist for a number of liberal and radical causes. For several years, he edited The Masses. With his sister Crystal Eastman, he co-founded in 1917 The Liberator, a radical magazine of politics and the arts.

Max Farrand was an American historian who taught at several universities and was the first director of the Huntington Library.

Max Heindel was a Danish American Christian occultist, astrologer, and mystic.

Sir Max Pemberton was a popular English novelist, working mainly in the adventure and mystery genres.

Max Radin was an American legal scholar, philologist, and author. The noted anthropological scholar Paul Radin was his younger brother.

Johann Kaspar Schmidt, known professionally as Max Stirner, was a German post-Hegelian philosopher, dealing mainly with the Hegelian notion of social alienation and self-consciousness. Stirner is often seen as one of the forerunners of nihilism, existentialism, psychoanalytic theory, postmodernism and individualist anarchism.

Maxwell "Bogey" Bodenheim was an American poet and novelist. A literary figure in Chicago, he later went to New York where he became known as the King of Greenwich Village Bohemians. His writing brought him international notoriety during the Jazz Age of the 1920s.

May Agnes Fleming was a Canadian novelist. She was "one of the first Canadians to pursue a highly successful career as a writer of popular fiction."