25 Phil knight
You probably have at least a clothing piece of his company.
In 1962, Phil Knight founded a company called Blue Ribbon Sports and now known as Nike. After 52 years he retired from the chairman position. He used to be a track runner and founded the company with his ex-track coach. In 2016 he donated 500 million dollars to the University of Oregon, the university in which he studied in order to open a new campus with the goal to improve scientific discoveries.
Net worth: Around 34.3 billion U.S. dollars.