Folorunsho Alakija: $1.61 billion
Patrice Motsepe: $1.81 billion
South-African Patrice Motsepe, 55, founder of the mining company African Rainbow Minerals, was Africa’s first black billionaire. The father of three was also the first African to sign Bill Gates’ Giving Pledge, promising to donate at least half of his wealth to charity. Motsepe and his wife Precious created the Motsepe Foundation in 1999 to help create new jobs, support education, and improve the lives of children, the unemployed, and the disabled, among others.