Prince Karim Al-Husseini Aga Khan, Approximate fortune: $ 800 million
Prince Karim Al-Husseini Agha Khan is the leader of the Ismaili Shiites of the World (Nizariyeh Sect), a well-known businessman and investor who has a special interest in horse breeding. He inherited his religious title from his grandfather and owns hundreds of horse races, horse farms and even large boats.