John Michael Deni (May 8, 1903 – February 4, 1978) was an American racewalker.

He competed in the men's 50 kilometres walk at the 1948 Summer Olympics and the 1952 Summer Olympics.

[1][2][3][4] He won 13 AAU walking championships.

[5] In 1937, he set the world record by completing the 20,000 meter walk in 1:08:55.

This biographical article about an American race walker is a stub.