Cognomen Wetthaisong (Wetthaisong 
) , in all the world, is a very rare last name. The last name Wetthaisong is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname, and Philippines, where it is an extremely rare surname.
Yom, Anurak, Supansa, Nittaya, Waranon, Anongnad, Taveesak, Noppakao, Warinraya, Krittanan, Wetchaphool, Sukhontharat, and Phongsathorn