Mike Adenuga – $6.2 Billion
Mike Adenuga is a Nigerian businessman who made his fortune in the telecommunications and oil industries. He is the founder and chairman of Globacom, a Nigerian telecommunications company that operates in several African countries. Adenuga is also the founder and chairman of Conoil Producing, a Nigerian oil exploration company. He is known for his philanthropic work, particularly in education and healthcare, through the Mike Adenuga Foundation.