Duffy Lewis, American baseball player and manager (b. 1888)
George Edward "Duffy" Lewis (April 18, 1888 – June 17, 1979) was an American professional baseball left fielder who played in Major League Baseball (MLB) for the Boston Red Sox, the New York Yankees, and the Washington Senators from 1910 to 1921.

Lewis attended Saint Mary's College of California. He made his MLB debut with the Red Sox in 1910, where he formed the Golden Outfield with Tris Speaker and Harry Hooper. He won three World Series championships with Boston (1912, 1915, and 1916). The Red Sox traded Lewis to the Yankees, where he played in 1919 and 1920, before they traded him to the Senators before the 1921 season. He continued to play and manage in the minor leagues until 1929.

Lewis continued to work in baseball as a coach for the Boston Braves from 1931 to 1935, and then as their traveling secretary through 1961. Lewis is a member of the Boston Red Sox Hall of Fame and the Pacific Coast League Hall of Fame.