Henry J. "Handsome Harry" Boyle (September 20, 1860 – May 25, 1932) was an American professional baseball player. He was a pitcher over parts of 6 seasons (1884–1889) with the St. Louis Maroons and Indianapolis Hoosiers. He led the National League in ERA in 1886 while playing for the Maroons. For his career, he compiled an 89–111 record in 207 appearances, with a 3.06 ERA and 602 strikeouts.