#8 Muammar Gaddafi - Net Worth $200 Billion
After his death in 2011, reports surfaced that Muammar Gaddafi was secretly the wealthiest person in the world with a net worth of $200 billion. In the months surrounding his death nearly $70 billion in cash was seized in foreign bank accounts and real estate. Muammar Gaddafi's iron fisted rule over Libya's oil fields made up the rest of his net worth.