13. Mo Ibrahim | Net Worth: $1.1 Billion
Mo Ibrahim is the founder of the British telecom company, Celtel International. His company was one of the first of its kind in the Middle East and Africa.
In 2005, he sold the company to Kuwait’s Mobile Telecommunications for $3.4 billion and he kept $1.4 billion. After that, he became a billionaire. Currently, he works through his Mo Ibrahim Foundation to improve the lives of African citizens.