Cognomen Luangthong (Luangthong 
) , all over the world, is a rare family name. The cognomen Luangthong is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname.
Sanya, Nutthawadee, Weerapong, Thongpipat, Thaweesap, Duangporn, Pongnarin, Pataranun, Kanokporn, Suwatchai, Weethara, Teerarat, Prathana, Kritnara, Wachirawit, Khanobporn, Chanicha, Sakgarin, Nuathip, Jindapa, Rakpong, Prayuth, Kitsada, Kewalee, Sopawan, Tipsuda, Dariga, Pichit, Suwit, Chanoomas, and Kamonchanok