Gangzha District (simplified Chinese: 港闸区; traditional Chinese: 港閘區; pinyin: Gǎngzhá Qū) is a former district of Nantong, Jiangsu province, China.

In July 2020, it was merged into Chongchuan District.

[1] The district had an area of 134 kilometres (83 mi) and the population was around 180,000 in 2001.

Before being merged into Chongchuan District in July 2020, Gangzha District has 6 subdistricts.

This Jiangsu location article is a stub.