Cognomen Duangthai (Duangthai 
) , worldwide, is a rare family name. The last name Duangthai is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
Samai, Rattanaporn, Krittiyaporn, Yutthasak, Nutcharee, Thunyarat, Thanaporn, Lapatrada, Phatranat, Audcharee, Setthawut, Nahathai, Nanthiya, Thitiwut, Thadtharin, Phanumat, Panisara, Sutthida, Sangwahn, Thaneth, Aekpawat, Amolwan, Suparuk, Sunanta, Mayuree, Prakit, Somsak, Nawin, Wongsathorn, and Vatcharapong