John Gransfield Kling (November 13, 1875 – January 31, 1947) was an American professional baseball player and manager. He played in Major League Baseball as a catcher from 1900 to 1913, most prominently as a member of the Chicago Cubs teams that won four National League pennants and two World Series championships between 1907 and 1910. He also played for the Boston Braves / Rustlers and the Cincinnati Reds.