Longtan Subdistrict () is a subdistrict on the southeast portion of Dongcheng, Beijing, China. In 2020, it has a population of 53,930.
The subdistrict was named after the Longtan Lake () that is located within the subdistrict.
As of 2021, the Longtan Subdistrict was divided into 10 communities, all of which are listed in the table below: