Harry S. Toy (1892 – September 9, 1955) was an American politician, prosecutor, and judge. He served as Wayne County Prosecutor (1930–1935), Michigan Attorney General (1935), and a justice of the Michigan Supreme Court (1935–1937). Both as a prosecutor and as police commissioner, Toy subscribed to McCarthyism and sought to root out and destroy communism, which Toy blamed for labor activism and various societal ills. In November 1936, Toy, a Republican, was defeated for reelection to the Michigan Supreme Court by Democrat Bert D. Chandler, by a vote of 862,147 to 755,227. From 1947 to 1950, he was the police commissioner of Detroit. He planned to run for Governor of Michigan, but died of a heart attack at age 63 in Detroit.