Nanfaxin Town () is a town in western Shunyi District, Beijing, China. It borders Mapo Town and Shuangfeng Subdistrict to its north, Wangquan Subdistrict and Renhe Town to its east, Capital Airport Subdistrict to its south, Houshayu and Gaoliying Towns to its west. The 2020 Chinese census counted 54,195 residents for the area.
The settlement here used to be called Faxin Village, named after the two dominant families, Fa (æ³Â) and Xin (ä¿¡), within the region. During the Ming dynasty, many villagers moved north and established another Faxin Village, so this region was renamed Nanfaxin () to avoid confusion.
In 2021, Nanfaxin Town was made up of 17 subdivisions, in which 1 was a community and 16 were villages: