As of 03/08/2012, the American swimmer Michael Phelps has won 16 Olympic gold medals. At the age of 19, Phelps won 6 gold medals and two bronze in 2004 Athens Olympic games.At the age of 23, Phelps won 8 gold medals in 2008 Beijing Olympics.At the age of 27, Phelps won 2 gold and 2 silver in 2012 London Olympics.source: en.wikipedia.org/wiki/Michael_Phelps