Family name Douangchai (Douangchai 
) , around the world, is an extremely rare last name. The surname Douangchai is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Much more prevalently, Douangchai is the forename as well as the last name.
Thao, Thepsirikhou, Singhathip, Salinthone, Inthavong, Vilaysane, Vilaichit, Ratsabout, Phathamookh, Thepsirikhoun, Phannareth, Xaysomsack, Daraphet, Kangnavong, Sayasane, Samontry, Sarivong, Khouvilay, Price, Khamkaewduangsawang, and Nanthapanya