Francis Paul Prucha (January 4, 1921 – July 30, 2015) was an American historian, professor emeritus of history at Marquette University, and specialist in the relationship between the United States and Native Americans. His work, The Great Father: The United States Government and the American Indians, won the Ray Allen Billington Award and was one of the two finalists for the 1985 Pulitzer Prize in History. It is regarded as a classic among professional historians.