Tanzhesi Town is a town located in the southeastern portion of the Mentougou District in Beijing, China. It serves as a residential and administrative area within the city's suburban landscape.
The town shares borders with several surrounding areas, including Dongxinfang Subdistrict, Yongding and Longquan Towns to the north; Yongding and Wangzuo Towns to the east; Qinglonghu and Hebei Towns to the south; and Fozizhuang Township to the west. As of 2020, the population of Tanzhesi Town was recorded at 11,053 residents.