Robert Ng Chee Siong (Chinese: 黃志祥; pinyin: Huáng Zhìxiáng; Jyutping: wong4 zi3 coeng4; born 1952) is a Singaporean billionaire businessman, and the chairman of Hong Kong property development conglomerate Sino Group since 1991. He is the eldest son of Ng Teng Fong, a Singaporean real estate billionaire. Forbes listed them together as the 30th richest people in the world in 1997. As of July 2017, Robert, along with his brother Philip Ng, has an estimated net worth of $9.7 billion.