Claude Moore Fuess (January 12, 1885 – September 11, 1963) was an American author, historian, educator, and 10th Headmaster of Phillips Academy Andover from 1933 to 1948. After attending Amherst College and earning a Ph.D at Columbia University, Fuess taught English at Phillips Academy from 1908 to 1933. As Headmaster he guided the school in a new era as it faced the Great Depression and Second World War. Concurrent with his teaching and Headmaster roles, Fuess led a writing career spanning several decades. He is credited as the author or editor of over 30 books and articles including biographies of Caleb Cushing, President Calvin Coolidge, Rufus Choate, Daniel Webster, and Carl Schurz.