Charles Herbert Klein (October 7, 1904 – March 28, 1958), nicknamed the "Hoosier Hammer", was an American professional baseball player. He played in Major League Baseball as an outfielder for the Philadelphia Phillies (1928–33, 1936–39, 1940–44), Chicago Cubs (1934–36) and Pittsburgh Pirates (1939). He was one of the most prodigious National League sluggers in the late 1920s and early 1930s, and was the first major league player to be named to the All-Star Game as a member of two different teams. Klein was elected to the Baseball Hall of Fame in 1980.
