Yeung Sum, SBS, JP (simplified Chinese: 杨森; traditional Chinese: 楊森; pinyin: Yáng Sēn; Jyutping: Yeung4 Sum1; born 22 November 1947 in Guangzhou, Guangdong with family roots in Zhencheng, Guangdong) is a Hong Kong politician and academic. He served several terms as a Legislative Councillor and was the second chairman (2002–2004) of the Democratic Party (DP), a pro-democracy political party in Hong Kong. He is a lecturer in at the University of Hong Kong.