Ong Chit Chung (simplified Chinese: 翁执中; traditional Chinese: 翁執中; pinyin: Wēng Zhízhōng; 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.

In 1991, Ong was appointed Parliamentary Secretary for Ministry of Home Affairs and Labour.

During his twenty years in politics, Ong also served as the Chairman for the Government Parliamentary Committees for Education, Defence and Foreign Affairs.

[9] Ong died from heart cancer at home on 14 July 2008, leaving behind a wife and two sons.

[11] The Ong Chit Chung Memorial Scholarship in the Department of History at the National University of Singapore is also named after him.