Datun Subdistrict () is a subdistrict on northwest of Chaoyang District, Beijing, China. It borders Aoyuncun Subdistrict to the north and west, Laiguangying Township and Wangjing Subdistrict to the east, Yayuncun and Xiaoguan Subdistrict to the south. As of 2020, its population was 132,457.
The name of this subdistrict was from Datun () Village, which was historically a station for crops or military personnel.
As of 2021, there are a total of 20 communities within Datun Subdistrict: