Peter William Appleton (May 20, 1904 – January 18, 1974), born Peter Jablonowski and sometimes known as "Jabby" and the "Polish Wizard," was an American baseball player, scout, and manager. Appleton played college baseball for the University of Michigan and played professional baseball from 1926 to 1951, including stints as a pitcher for the Cincinnati Reds, Cleveland Indians, Boston Red Sox, New York Yankees, Washington Senators, Chicago White Sox and St. Louis Browns. He compiled a record of 57–66 in 343 games in Major League Baseball.