Marion Jones won 5 medals at the Sydney Olympics but she was later disqualified after she admitted that, from September 2000 to July 2001 she had been using the designer steroid known as "the clear". As well, her fifth-place finish in the long jump at the 2004 Athens Olympics was disqualified.
http://sports.espn.go.com/oly/trackandfield/news/story?id=3151367
Jackie Joyner-Kersee was never stripped of her gold medals. She is a retired American track and field athlete who won multiple Olympic medals during her career, including two gold medals in the heptathlon event in 1988 and 1992.
Michael Phelps has the most Olympic Golds (all time), world championship medals, and much more.
Michael Phelps (22 medals).
Wilma Rudolph.
Ole Einar Bjørndalen has won the most Winter Olympic medal with 13 total medals. The American with the most Winter Olympic medals is Apolo Anton Ohno with 8 total medals.
Currently Michael Phelps holds the world record for the most Olympic medals won at 22 medals.
Apolo Anton Ohno 8 with medals.
Jim Thorpe
Michael Phelps the SWIMMER
Germany
Jesse Ownes (USA).
Micheal Phelps