King Abdullah bin Abul Aziz Net Worth: King Abdullah bin Abul Aziz was a Saudi King and politician who had a net worth of $18 billion. King Abdullah was the King of Saudi Arabia from 2005 until his death in 2015. King Abdullah bin Abul-Aziz also served as Saudi Arabia's regent from 1996 to 2005 and was the Commander of the National Guard for 48 years, stepping down from the post in Fall 2010. Born on August 1, 1924, in Riyadh, he is the absolute monarch of the desert kingdom. Under King Abdullah's supervision is the security of Islam's holiest cities, as well as the control of 20% of the world's best known oil reserves. He ascended the throne of the Kingdom in August 2005, following the death of his half-brother, King Fahd. Since, he has successfully led Saudi Arabia through the global recession with government spending and high oil production. Reportedly, the country is about to see 4% growth this year, which will have positive effect on the King's fortune. Not even the Arab Spring that occurred under his rule didn't manage to shake Abdullah's sovereignty. However, high youth unemployment has remained a threat. The aging ruler lost his second heir apparent when his brother, Crown Prince Nayef, died in June. Prince Nayef was replaced by another brother, 76-year-old Crown Prince Salman, the former governor of Riyadh, as heir apparent. King Abdullah died on January 22, 2015 at the age of 90.