7. Bernard Sherman aka Barry

•  Net Worth: $3.7 B                                                                      
•  Source of Wealth: pharmaceuticals                                                                           
•  Citizen: Canada
•  Age: 71

Bernard Sherman is the CEO of Apotex which is a generic drug manufacturing firm. He graduated in Engineering Science from University of Toronto at an early age. This richest Canadian went on to pursue Doctoral degree from Massachusetts Institute of Technology. Employing more than six thousand people, his firm exports drugs to more than 100 countries world-wide.