9.Sheikh of Kuwait
One of the wealthiest sheikhs in the world is the Sheikh of Kuwait.
Net worth: $400 million
Sabah IV Al-Ahmad Al-Jaber Al-Sabah is the Sheikh of Kuwait and Commander of the Military of Kuwait.
The millionaire was the Prime Minister of Kuwait from 2003 to 2006, when he became the Sheikh, after Sheikh Saad abdicated. In 2008 he dissolved the National Assembly of Kuwait.