25. Othman Benjelloun & family

Net Worth: $1.6B
Age: 92
Country: Morocco
Industry: Finance & Investments

Othman Benjelloun is CEO of BMCE Bank of Africa, which has a presence in more than 20 African countries.
His father was a shareholder in RMA, a Moroccan insurance company; Benjelloun built it into a leading insurer.
Through his holding company FinanceCom, he has a stake in the Moroccan arm of French telecom firm Orange.
He inaugurated in 2014 a $500 million plan to build the 55-story Mohammed VI Tower in Rabat. It will be one of the tallest buildings in Africa.