Ian Thorpe

One of Australia's most successful Olympians is Ian Thorpe. He is tied with fellow swimmer Emma McKeon for the most gold medals earned by a single athlete in any discipline, with five. His estimated net worth is in the millions of dollars.

Ian received around $135,000 for all nine of his Olympic medals, plus additional prize money from other tournaments such as world championships.

Adidas, as well as Australian powerhouse corporations Qantas, Telstra, and Seven Network, sponsored him throughout his career. He even dabbled with television, hosting a couple of reality shows and even acting as an extra on Friends!

Net Worth: over $2 million

Citizenship: Australian