Net Worth: $17.5 billion
Profession: American computer scientist
How He Made His Wealth: He is the co-founded one of the biggest search engines in the universe, Google.
Fast Facts: The self-made billionaire is a native of San Francisco, and he has computer science genes in his blood. Both of his parents were computer science professors. He dropped out of the computer science Ph.D program in 1998, and later co-founded the little website that made him rich.