As of this point in time, Mark Spitz holds that title with 11 medals in swimming: 9 gold, 1 silver, and one bronze.
Michael Phelps came close to Spitz' 9 gold medals at the 2004 games, but unfortunately fell short of that goal.
Michael Phelps, USA Swimming
Michael Phelps (22 medals).
The most won by a single athlete is 8 - Mark Spitz of the USA. (Swimming)
Currently Michael Phelps holds the world record for the most Olympic medals won at 22 medals.
Michael Phelps the SWIMMER
Micheal Phelps-8 gold-swimming-America 7 world records-1 olympic record
australia
The most successful and decorated Olympic athlete as of 2014 is Michael Phelps. He has 22 Olympic medals with 18 being gold medals.
Natalie Coughlin of the USA won a total of 5 medals in Beijing. 1 Gold, 2 Silver, and 3 bronze This was the most a women has every won in a single olympic games...
Micheal Phelps
Michael Phelps of the US has the most olympic gold medals (14 total in 2004 and 2008) and the most medals by a male athlete (16 including his 2 bronze medals).
Larissa Latynina (USSR) has won the most number of medals in the Olympic Games with an incredible tally of 18 medals (9 gold, 5 silver and 4 bronze).Micheal Phelps (USA) has won the most medals by a male athlete with 16 (14 gold and 2 silver) and he has won the most Olympic Gold Medals with 14.