Dasi Town () a town situated in the eastern part of Xiqing District, Tianjin, China. It shares a border with Meijiang and Taihulu Subdistricts to its north, Shuanggang Town and Haitang Subdistrict to its east, Xinzhuang and Balitai Towns to its southeast, Wangwengzhuang Town to its south, Jingwu Town and Liqizhuang Subdistrict to its west, and Jinmenhu Subdistrict to its northwest. The town also contains two subdistricts within: Chilongnan and Chilongbei Subdistricts. The population of this town is 113,290 as of 2010.
The town's name "Dasi" () is referring to Yongxi Temple that was constructed here during the Song dynasty.
Dasi Town is situated on the northern bank of Duliujian River. Tianjin-Hebei Expressway passes through the town.
As of the year 2022, Dasi Town is divided into 25 subdivisions, more specifically 10 residential communities and 15 villages. They are listed as follows: