18. Bahaa Hariri

Net Worth: $2.1 B
Age: 58
Residence: Switzerland
Nationality: Lebanese
Industry: Real Estate

Bahaa Hariri is the eldest son of slain Lebanese Prime Minister Rafik Hariri (d. 2005) and inherited his fortune from his father. In 2008, Bahaa Hariri sold his stake in Saudi Oger, the family construction business, to his brother Saad Hariri, also a former prime minister of Lebanon. Bahaa Hariri founded and chairs Horizon Group, a real estate holding company with investments in Amman, Jordan, and Beirut, Lebanon. He helped revitalize an area of Amman called Abdali in partnership with the Jordanian government. He's also the majority owner of Globe Express Services, with a presence in more than 100 countries.