The four richest Africans are wealthier than about half of the continent's 750 million people, anti-poverty charity Oxfam said in a report published on Thursday, warning widening inequality was hampering democracy.
Oxfam named only Nigerian billionaire Aliko Dangote, the continent's richest man, in its report.
But according to Forbes, the top four are rounded out by South Africans Johann Rupert and Nicky Oppenheimer, along with Egyptian businessman Nassef Sawiris.
Over the past five years, African billionaires have seen their wealth soar by 56 percent, with the richest among them recording even higher gains, Oxfam said.