Zhongshan Torch Hi-tech Industrial Development Zone () also known as Zhongshangang Subdistrict () or Zhangjiabian Subdistrict (), is a national-level hi-tech industrial development zone in Zhongshan, Guangdong, China. Formerly the three subdistricts: THIDZ, Zhongshangang and Zhangjiabian were three separate subdistricts until they were merged in January 1993. The zone lies in the east of Zhongshan, with an area of . At the 2020 census, it has a population of 289,518.
It was jointly established by the Ministry of Science and Technology, Guangdong Provincial Government and Zhongshan Municipal Government in 1990. Several national-level enterprises have established industrial bases in the zone.