3. Khalifa bin Zayed bin Sultan Al Nahyan – Emir of Abu Dhabi (net Worth : $15 Billion)
Khalifa bin Zayed bin Sultan Al Nahyan, born 7 September 1948; referred to as Sheikh Khalifa, is the President of the United Arab Emirates, the Emir of Abu Dhabi and the Supreme Commander of the Union Defence Force.
He succeeded his father, Zayed bin Sultan Al Nahyan, as Emir of Abu Dhabi on 2 November 2004, and he became the President of the Federation the next day. As Crown Prince, he had already been acting as president since the late 1990s while his father was in ill health. Khalifa is also chairman of Abu Dhabi Investment Authority, which manages over $600 billion in assets. The Al Nahyan family is believed to have a fortune of $150 billion collectively.