10. Kristin Otto born 1966 Kristin Otto is a German Olympic swimming champion. She is most famous for being the first woman to win six gold medals at the 1988 Seoul Olympic games.

9. Debbie Meyer, born 1952 Deborah Elizabeth Meyer is a former American swimmer who won the 200, 400, and 800 m swimming events at the 1968 Summer Olympics in Mexico City.

8. Krisztina Egerszegi born 1974 She is a three time Olympian (1988, 1992 and 1996) and five time Olympic champion; and one of two individuals to have ever won the same swimming event at 3 consecutive Summer Olympics.

7. Grant Hackett, born 1980 This achievement has led him to be regarded as one of the greatest distance swimmers in history.

6. Johnny Weissmuller  born 1904 – died 1984 He won fifty-two US National Championships and set sixty-seven world records. After his swimming career.

5. Pieter van den Hoogenband  born 1978He began competeing in the olympic games at the age of 18, and throughout his career achieved three gold, 10 silver, and four bronze olympic medals.

4. Aleksandr Popov, born 1971 He holds four gold medals and five silver medals at the Olympic Games, six gold, four silver, and one bronze medal at the World Championship, and an impressive 21 gold, three silver.

3. Ian Thorpe  born 1982He has won five Olympic gold medals, the most won by any Australian, and, at the 2001 World Aquatics Championships.

2. Michael Phelps  born 1985In doing so he has twice equaled the record eight medals of any type at a single Olympics achieved by Soviet gymnast Alexander Dityatin at the 1980 Moscow Summer Games.

1. Mark Spitz,  born 1950rk Andrew Spitz (nicknamed Mark The Shark) has won seven gold medals at the 1972 Munich Olympic Games.