Mike Adenuga, $4.7 billion
Nigerian. Oil, Telecoms
Adenuga made his initial fortune distributing lace and handling large construction contracts for Nigeria’s military government in the 80s. Under the benefaction of former military President Ibrahim Babangida, he was awarded an oil production license and went on to become the first Nigerian to strike oil in commercial quantities. His Conoil Producing Limited is one of Nigeria’s largest indigenous oil explorers. He also owns Globacom, Nigeria’s second largest mobile phone network. His daughter, Bella Disu, is generally believed to be his heir apparent.