Michael Johnson (USA).
He was the first black athlete to win the most medals
Eric Heiden won 5 gold medals at the 1980 Olympic games in Lake Placid, New York. He won all the medals in speed skating.
Jim Thorpe, named "Greatest male athlete of the first half century" by the Associated Press, won gold medals in the decathlon and pentathlon in the 1912 olympics.
The 1900 Summer Olympics in Paris were the first Olympics at which a Canadian athlete participated.
Mark Spitz made his big splash during the 1972 Olympics, becoming the first athlete to win seven gold medals in an Olympiad.
Dame Kelly Holmes won two Olympic Gold Medals at the 2004 Athens Olympics; 800m and the 1500m, in the progress she became the third woman to the 800-1500m double at the Olympics and first British athlete to win two track-and-field gold medals at the same Olympics in 84 years!She also has won a bronze medal in the 800m at the 2000 Sydney Olympics.
The Olympics started giving out gold medals in 1904 to first-place winners. When the Olympics began in 1896, the awards given to first-place winners were silver medals and those in second place received bronze medals. In the next Olympics of 1900, winners got trophies instead of medals.
12, he is the youngest athlete to compete in olympics history.