Cognomen Semathong (Semathong 
) , all around the world, is a rare last name. The last name Semathong is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
Few, Kwanchai, Peeyadarakorn, Pornthip, Ruamchok, Jiramitr, Nattanan, Nuttanit, Wanlapha, Witchuda, Chuthima, Yaowalak, Thongkham, Nanthawan, Nannaphat, Sirapatsorn, Sitthikarn, Kanjananan, Patarapong, Siraphatsorn, Sumpuntamitr, Chutathip, Phattarason, Chonlaya, Yuwaree, Anan, Saran, Araya, Pijak, Vasin, Marisa, Somsuk, Somjai, Somjet, Sasiyada, Rujira, Samphat, Surasit, Anusorn, Kabmanee, Pornpen, Pongsak, Temsiri, Wanchat, Wittaya, Visoot, and Thanutchaporn