Xiaoshan Subdistrict () is a subdistrict of Lunan District, Tangshan, Hebei, China. The subdistrict spans an area of , and has a hukou population of 14,800.
Xiaoshan Subdistrict was a prominent early industrial center in Tangshan, dating back to the late 19th century. In 1877, the Qing dynasty government opened a mine in the southern portion of Qiaotun (), within present-day Xiaoshan Subdistrict. The area's industry propelled the area to become a major commercial hub within Tangshan prior to the Japanese invasion of China.
The subdistrict is located within the eastern portion of Lunan District, adjacent to the BeijingâÂÂShanhaiguan railway. The subdistrict's western border with Yonghongqiao Subdistrict is formed by Fuxing Road (). Xiaoshan Subdistrict is bordered to the east by Wenhuabeihou Street Subdistrict. The subdistrict's southern border with Nüzhizhai Township is formed by Jixiang Road ().
Xiaoshan Subdistrict administers the following seven residential communities ():