Xinzhuang is a town in Jinnan District, Tianjin, China. It lies in the northwestern part of the district, bordering Xinli and Jinqiao Subdistricts to the north, Xianshuigu Town to the east, Haitang Subdistrict to the south, and Shuanggang Town to the west. The town also has an exclave located north of Balitai Town.
As of 2010, Xinzhuang had a population of 38,666 residents. It is one of the towns that make up Jinnan District, which forms part of the wider Tianjin municipality in northern China.