Edwin David Joost (June 5, 1916 – April 12, 2011) was an American professional baseball player and manager. He played as a shortstop in Major League Baseball for all or portions of 17 seasons between 1936 and 1955. In 1954, Joost became the third and last manager in the 54-year history of the Philadelphia Athletics. Under Joost, the A's finished last in the American League and lost over 100 games. After that season, they relocated to Kansas City.