Tan Kim Choo is a Singaporean billionaire who has an estimated net worth of $4.97 billion as of April 2017, according to Bloomberg.
Known as Ng Teng Fong's wife, Tan Kim Choo has stakes in three publicly assets. She owns about 32 percent of developer and beverage maker, Yeo Hiap Seng; 8 percent of Far East Hospitality Trust which controls hotels and serviced residences; and 31 percent from health care company, Far East Orchard.
In 2011, Tan and her family donated about $100 million to a hospital in homage of her late husband. The Ng Teng Fong General Hospital was opened in June 2015.
Tan Kim Choo is the widowed of Ng Teng Fong. The couple has eight children.