Nathaniel Schachner (1895–1955), published as Nat Schachner and Nathan Schachner, was an American writer, historian and attorney.

He wrote science fiction during the formative years of the genre’s pulp magazine market, contributing stories that explored scientific and social themes. Alongside fiction, Schachner became a respected historian of the American Revolutionary era. His historical books examined figures and events from the nation’s founding, reflecting a parallel career distinct from his magazine fiction.