John Joseph McGraw (April 7, 1873 – February 25, 1934), nicknamed "Little Napoleon" and "Muggsy", was a Major League Baseball (MLB) player and long-time manager of the New York Giants. He was elected to the Baseball Hall of Fame in 1937.

Much lauded as a player, McGraw was one of the standard-bearers of dead-ball era baseball. Known for his quick temper but also being a great baseball mind, scientifically as well as in bending the playing rules, especially in the days of less than four umpires, McGraw was a key player on the pennant-winning 1890s Baltimore Orioles, and later applied his talents and temper while a captain (playing)-manager, transitioning in 1902 to the New York Giants, with whom he became entirely a bench manager in 1907 until his retirement in 1932.