#6. Rupert Murdoch
Net Worth: $11.4 billion
Country of Origin: Australia
Company: News Corp (NASDAQ:NWSA), Twenty-First Century Fox Inc (NASDAQ:FOX).
World-famous media mogul Murdoch was born in Australia and by age 22 (1952) owned a newspaper, which he inherited after his father passed away. Over time, he transformed this local company into a worldwide corporation, which would later become News Corp (NASDAQ:NWSA) and Twenty-First Century Fox Inc (NASDAQ:FOX). Murdoch acquired U.S. citizenship in 1985.