John O'Hearn

John "Jack" Ewing O'Hearn (July 28, 1893 – July 22, 1977) was a professional football player. He played in the National Football League in 1920 with the Cleveland Tigers and in 1921 with the Buffalo All-Americans. He graduated from Cornell University where he was a member of the Sphinx Head Society. He was elected to the College Football Hall of Fame in 1972.

His younger brother, Ed O'Hearn, played for the NFL's New York Brickley Giants in 1921. Both brothers played for the Tigers in 1920.