Louis Lehman Smyth (March 19, 1898 – September 11, 1964) was a professional football player for the Canton Bulldogs from 1920 until 1923. Smyth won two NFL championships with the Bulldogs in 1922 and 1923 and another with the Yellow Jackets in 1926. He also played for the Hartford Blues, Rochester Jeffersons and the Providence Steam Roller. Outside of the National Football League, he played for the Gilberton Cadamounts of the Anthracite League. During his year in Gilberton, Smyth doubled as a player with the Jeffersons. In 1923 Smyth led the NFL in touchdowns, with 7.