Muhammad Ali vs. Ken Norton III was a professional boxing match contested on September 28, 1976, for the undisputed heavyweight championship.

Ali and Norton met for the third and last time on September 28, 1976, at Yankee Stadium to complete their trilogy.

This time, 34-year-old Ali entered the ring as the Heavyweight Champion, making the eighth defense of his title since his victory over George Foreman in 1974.

Ultimately, Arthur Mercante scored the bout 8 to 6 while Harold Lederman and Barney Smith had it 8 to 7, all in favour of the champion, giving Ali a unanimous decision victory.

Norton said of the result years later: "If you saw the look on Ali's face at the end, he knew I beat him.