Longshan Subdistrict () is a subdistrict situated in southern Huairou District, Beijing, China. It borders Quanhe Subdistrict in the north, Miaocheng Town in the south, and surrounded by Huairou Town in the east and west sides. It had a population of 74596 as of the 2020 census.
This subdistrict was formed in 2002. Its name, Longshan, literally translates to "Dragon Mountain".
As of 2021, Longshan Subdistrict has 16 subdivisions. Twelve are communities and four are villages: