Dachong is a town in China. It is located in the Pearl River Delta region of Guangdong province, and it is administered directly by the prefecture-level city of Zhongshan.
As a town under Zhongshan's direct administration, Dachong forms part of the city's administrative structure rather than belonging to a separate county-level jurisdiction. Its position in the Pearl River Delta places it within one of southern China's major economic and urban regions.