Harry E. Chapman (October 26, 1885 – October 21, 1918) was a professional baseball player. He played all or part of five seasons in Major League Baseball for the Chicago Cubs, Cincinnati Reds, St. Louis Terriers, and St. Louis Browns, primarily as a catcher. He saw the majority of his action as a backup backstop for the Terriers in the Federal League.
Chapman played minor league baseball in the Central Kansas League. He made his major league debut on October 6, 1912, the final game of the Chicago Cubs' season, and went 1-for-4 with a triple and an RBI. On December 15 that offseason, Chapman was traded by the Cubs, along with Grover Lowdermilk and future Hall of Famer Joe Tinker, to the Cincinnati Reds for five players. Chapman, however, played with the minor-league Atlanta Crackers for much of 1913. He made two pinch-hitting appearances for the Reds that season, singling and striking out.
The catcher was one of many MLB players to ju