Mark Zuckerberg  is an American computer scientist, software developer and philanthropist best known for creating the social networking site Facebook, of which he is CEO and president. It was co-founded as a private company in 2004 by Zuckerberg and classmates Dustin Moskovitz, Eduardo Saverin, and Chris Hughes while they were students at Harvard University. In 2010, Zuckerberg was named Time magazine’s Person of the Year.

Net Worth: US.$9.4 billion