Na San (นาสาร) is a subdistrict of Ban Na San in Surat Thani. Khlong Chawang is a local civic and cultural focus: the provincial government identifies its banks in Na San as the setting for the town's traditional-food festival.
Na San municipality also works with the district agricultural office on the Rong Rian rambutan festival and orchard competitions. These events reflect the fruit-growing economy of the surrounding district without implying that every orchard lies within this tambon. The administrative destination is distinct from both Ban Na San District and individual markets or festival venues.
