Michael Phelps — $80 Million

Michael Phelps is a retired Olympic swimmer and endorser who amassed a net worth of $80 million. He is said to be the most decorated Olympic athlete in history, holding a total of 28 Olympic Medals (23 are gold medals). He is considered by sports enthusiasts to be the all-time greatest swimmer.

Phelps began swimming at the tender age of 7 with the guidance of a coach, and people quickly recognized his talent. He tried out for the 2000 US Summer Olympic Team when he was only 15 and made it to the group. In 2001, Phelps won the title of being the youngest male swimmer to ever set a world record in the category of the 200-meter butterfly. He later attended the University of Michigan and earned a degree in sports management and marketing. All the while, Phelps was continuing to crush world records each year at various competitions.