John Hamilton Nunn (born February 3, 1978) is an American race walker.

[3][1] After competing in track and field and cross country running at William Henry Harrison High School in Evansville, Indiana, Nunn attended the University of Wisconsin-Parkside on a racewalking scholarship.

While enlisted, Nunn served as a member of its World Class Athlete Program.

Having since left the WCAP, Nunn trained as a physician's assistant and commissioned as an officer in the United States Army.

[6] Being a professional baker, Nunn used a portion of his baking profits to bring his daughter Ella with him to the Olympics in London.