Adam Peaty

The next person on the list is Adam Peaty, who is valued at between $2 and $5 million. The British swimmer is a force in the water, having dominated the breaststroke events on the international stage since 2014.

Because British swimmers are not compensated for winning Olympic gold like competitors from other countries, Adam must rely on other international contests and business sponsorships to supplement his income.

Adam Peaty Race Clinics, which provides in-person stroke technique clinics for young swimmers around the UK, is in addition to his partnerships with Arena, Cupra, Castore Sportswear, and others.

Net Worth: $2-5 million

Citizenship: British