Thailand's King Bhumibol Adulyadej has the highest net worth of $30 billion, followed by Brunei's Sultan Haji Hassanal Bolkiah with $20 billion, and Saudi Arabia's King Abdullah bin Abdulaziz Al Saud with $18 billion, making them the top three richest royals in the world according to their estimated net worths.

1. The Richest Royals in the World

2. Thailand's King BhumibolAdulyadej, worth $30 billion

3. Brunei's Sultan Haji HassanalBolkiah, worth $20 billion

4. Saudi Arabia's King Abdullah bin Abdulaziz Al Saud, worth $18 billion

5. UAE's President Sheikh Khalifa bin Zayed al-Nahayan, $15 billion

6. Dubai ruler Sheikh Mohammed bin Rashid al-Maktoum, worth $4.5 billion

7. Liechtenstein's Prince Hans-Adam II, worth $3.5 billion

8. Morocco's King Mohammed VI, worth $2.5 billion

9. Qatar's Sheikh Hamad bin Khalifa al-Thani, worth $2.4 billion

10. Prince Albert II of Monaco, worth $1 billion

11. His Highness the Aga Khan, worth $800 million