No. Name Net worth (USD) Age Nationality Source(s) of wealth 1 Aliko Dangote $12 billion 61 Nigeria Dangote Group 2 Nicky Oppenheimer $7.7 billion 73 South Africa De Beers 3 Nassef Sawiris $7.2 billion 59 Egypt Orascom 4 Johann Rupert $6.8 billion 68 South Africa Richemont, Remgro 5 Mike Adenuga $5.3 billion 65 Nigeria Globacom, Conoil 6 Issad Rebrab $4 billion 74 Algeria Cevital 7 Naguib Sawiris $4 billion 64 Egypt Orascom 8 Koos Bekker $2.8 billion 65 South Africa Naspers 9 Isabel dos Santos $2.7 billion 45 Angola Investments 9 Patrice Motsepe $2.7 billion 55 South Africa African Rainbow Minerals