Gubeikou is a town in Miyun District in northeastern Beijing, China. It is traversed by the G101 highway and borders Luanping County in Hebei Province to the north, as well as the Beijing towns of Gaoling to the west, Xinchengzi to the east, and Taishitun to the south. As of 2020, it had a total population of 7,170 under its administration.
The area is one of the important passes of the Great Wall of China, and historically served as a chokepoint for travelers moving between Northeast China and Beijing. Its position on this route made it a significant crossing point in the region.