Ong Chit Chung (simplified Chinese: 翁执中; traditional Chinese: 翁執中; pinyin: Wēng Zhí Zhōng; 28 January 1949 – 14 July 2008) was a Singaporean politician who served as a Member of Parliament (MP) for Bukit Timah Group Representation Constituency (GRC) from May 1997 to October 2001 and Jurong GRC from March 2002 till his death in July 2008. He was also a military historian at the National University of Singapore.