Mike Adenuga Family (Nigeria)
Net Worth: $5.7 Billion
The family is making fortunes through telecommunications and oil exploration. Mike Adenuga is the second wealthiest person in Nigeria, the sixth in Africa, and 324 in the world. He is the Founder and Chairman of Globacom, the third-largest mobile telecommunication operator in Nigeria with over 55 million subscribers. He owns Conoil, an oil exploration firm operating six oil blocks in Nigeria. He began his business career selling lace materials and distributing soft drinks.