Tangjiazhuang Subdistrict () is a subdistrict in Guye District, in the city of Tangshan, Hebei, China.
On December 12, 2010, Donglian Community () and Qiaobei Community () were moved from Tangjiazhuang Subdistrict to the bordering town of .
Tangjiazhuang Subdistrict administers the following 11 residential communities ():
Per the 2010 Chinese Census, Tangjiazhuang Subdistrict had a population of 53,212. This is down from the 60,269 recorded in the 2000 Chinese Census. A 2005 population estimate put the subdistrict's population at 79,100.