The few Nigerians that have the list are Aliko Dangote, Mike Adenuga and Femi Otedola.
The list of top 21 Richest Nigerian billionaires has been based on:
The value of their shares held in quoted companies, the size and market share of their companies, the number of companies they own and its assumed value, the market value of their company's brand and the impact of their companies on the Nigerian economy.