9. Sergey Brin: Sergey Mikhaylovich Brin is a Russian born American Computer Scientist and Internet entrepreneur who co-founded Google with Larry Page. His estimated personal wealth in 2011 is $16.7 billion. He pursued his undergraduate degree from University of Maryland and studied Mathematics and Computer Science. He then acquired his Ph. D in Computer Science from Stanford University.

The Economist magazine referred to Brin as an "Enlightenment Man", someone who believes that "knowledge is always good and certainly always better than ignorance". Forbes has tagged him as the 15^th richest person in the world. Forbes has also declared Brin and Larry Page as the 5^th most powerful people in the world in 2009.