George Graham Mangus
- Bats Left, Throws Right
- Height 5' 11½", Weight 165 lb.
- Debut August 20, 1912
- Final Game September 20, 1912
- Born May 22, 1890 in Red Creek, NY USA
- Died August 10, 1933 in Rutland, MA USA
George Mangus played in the majors in 1912. In his first big league at-bat, he pinch hit for Pete Alexander. In February 1914 it was announced that he signed a contract with the 1914 St. Louis Browns, but he never appeared in the majors with them. He later signed a contract with Reading but ended up playing for New Haven.