Momiji Nishiya, 13, Wins Skateboarding Event in Tokyo: Is She the Youngest Olympic Gold Medalist?
Both Michael Phelps and Katie Ledecky debuted at the Olympics as 15-year-olds. But the Americans were not the youngest athletes to appear in the quadrennial mega-event, nor were they the youngest medal winners at the Games. A 10-year old Greek gymnast named Dimitrios Loundras was the youngest person to have ever participated in the Olympics (1896).