Huai So
Huai So is a tambon of Chiang Khong District, in Chiang Rai Province, Thailand. The main settlement of the subdistrict is also named Huai So.
Administration
The area of the subdistrict forms a Subdistrict Municipality as its local government. In 1995 it was established as a tambon administrative organization and upgraded to a municipality in 2007.The subdistrict is divided into 23 administrative villages.