John Alexander (July 4, 1896 – August 5, 1986) was a professional football player with the Massillon Tigers of the "Ohio League" and the independent Gilberton Cadamounts, Coaldale Big Green, Melrose Athletic Club and Millville Big Blue. He also played in the National Football League for the Milwaukee Badgers and New York Giants. He is best known for becoming the first person to have played outside linebacker.