Michael Phelps

The most decorated Olympian in history, Michael Phelps won 23 gold medals and 28 total Olympic medals across the 2000, 2004, 2008, 2012, and 2016 Games. At the 2008 Beijing Olympics he won 8 gold medals in a single Games, surpassing Mark Spitz's 1972 record of 7. Phelps held or shared 39 world records during his career and retired as the undisputed greatest swimmer of all time.