2) Bhumibol Adulyadej, King of Thailand – $30 Billion

Bhumibol Adulyadej has been the King of Thailand since 1946. He is the longest serving head of state. The king has made generous contributions to different sectors of Thai society. His is considered to be the wealthiest royal in the world and the longest reigning monarch in the history of Thailand.

1) Vladimir Putin, President of Russia – $40 Billion

Russian President Vladimir Putin’s reported income is only $80,000; however, whistleblowers like political scientist Stanislav Belkovsky and former fellow government member Ivan Rybkin claim that Putin controls secret assets in oil and natural gas companies like Gazprom and Gunvor to the tune of over $40 billion. Some reports are enormously high – at $70 billion.

Putin, who has been the President of Russia since 2012, has many supporters. Some of them claim that these allegations have not been proved. Till today no one knows the exact extent of his wealth.