6. Mark Zuckerberg – $44.6 billion
Facebook’s main man, it is no surprise that Mark has made himself a billionaire since his college project became such a worldwide blockbuster hit. He started Facebook when he was 19, and has since led it into the world social media leader it is today. He and his wife Priscilla Chan, who is a pediatrician, made a vow to donate $3 billion to cure and prevent all diseases in the world.
Frederic Legrand – COMEO / Shutterstock.com
