9. Clayton Riddell

•  Net Worth: $3.1 B                                                                      
•  Source of Wealth: oil & gas                                                                               
•  Citizen: Canada
•  Age:76

Clayton Riddell started with near-barren natural gas wells when he founded Paramount Resources in 1974. Generating most of his wealth from Oil and gas sector, Clayton Riddell is one of the key people in Paramount Resources which is a petroleum company. He is the eight richest Canadian. He resides in Calgary and studied geology in University of Manitoba. His fortune makes him one of the richest people in Canada. In August, Carleton revealed that it had rewritten this agreement, removing Riddell, who had pledged $15 million to the school, from the decision-making process.