American former swimmer, Olympic champion and former world-record holder Mark Spitz has an estimated net worth of $20 million. He won seven Gold Medals during the 1972 Summer Olympics. Only Michael Phelps surpassed the record by winning eight Gold Medals in the 2008 Beijing Olympics. He has a record that still stands when he set new world records in all seven events in which he competed. No other simmer s ever gained so great percentage of all the medals awarded for Olympic events held in a single Games since 1900.

Born Mark Andrew Spitz on February 10, 1950 in Modesto, California, he spent a portion of his childhood in Hawaii where he learned to swim. The family then returned to California where he began competing in swimming. At the age of ten, he already had a world record. He attended Santa Clara High School where he set records in every stroke he competed and for all distances. He has another world record at 16 for the 400-meter freestyle. He went to Indiana University as a pre-dental student and a member of the Phi Kappa Psi Fraternity.

Spitz literally dominated swimming from the mid-60s until the early 70s. He won four Gold Medals at the 1965 Maccabiah Games, his first international competition at the age of 15. He won five Gold Medals, a record that was not surpassed until 2007, at the Pan American Games in 1967. He won two Gold Medals during the 1968 Olympics and additional five more medals at the 1959 Maccabiah Games. He won seven gold medals at the 1972 Summer Olympics in Munich and he was the most successful athlete in the competition. He has won nine Olympics gold, a silver, and a bronze, 31 US Amateur Athletic Union titles, and eight US National Collegiate Athletic Association titles. He has set 35 world records, two were in trials and unofficial. He was named World Swimmer of the Year by Swimming World Magazine in 1969, 1971 and 1972.