6. Ng Teng Fong
Although he was born in Fujian, China in 1928 his family migrated to Singapore when he was six years old and he became a citizen of Singapore. His family is into real estate and owns the Sino Group and the Far East Organization, which has several malls and hotels in Hong Kong and Singapore.
Despite his obvious wealth, it was said the Ng Teng Fong lived a very frugal life, living in the same house he had acquired 30 years ago although they own at least one-fourth of the housing market in Singapore.