Harry Carr Maupin (July 11, 1872 – August 25, 1952) was an American Major League Baseball pitcher who played for two seasons. He pitched in two games for the St. Louis Browns during the 1898 season and five games for the Cleveland Spiders during the 1899 season. Maupin died at the age of 80 in Parsons, Kansas, and is interred at Oakwood Cemetery. He weighed approximately 150 pounds. His height was 5'7''.