4. Goh Chok Tong
Goh Chok is the Singaporean politician and the current member of the governing People’s Action party. He also served as the second Prime Minister of the Singapore from 1990 to August 2004. He also served as the senior minister in the cabinet and also the Chairman of the Monetary Authority of Singapore. Before entering into politics he works as the Planning and Projects Manager in the Neptune Orient Lines which is the shipping company and quickly he become Managing Director of NOL and the company achieves the impressive financial results under his leadership. Goh Chok estimated net worth is US $ 61.7 million and he is ranked at No. 4 in the list of top 10 richest politician of Singapore.