Surname Janthawong (Janthawong 
) , across the world, is a rare cognomen. The cognomen Janthawong is habitual in Thailand, where it is quite a rare surname, Malaysia, where it is a very rare surname, and the United States, where it is an extremely rare surname.
Naun, Niyada, Wiyada, Siriwan, Suparat, Suthida, Suchart, Adisorn, Kanjana, Kanlaya, Narutwan, Korawan, Pakinee, Porntip, Pimpika, Phannee, Rachata, Jularat, Thaksin, Nangnoi, Wannisa, Paphada, Nareen, Thibet, Thanya, Nisa, Yupa, Manop, Manee, Sanit, Sujin, Arrom, Arnon, Amnat, Narin, Wipha, Uthai, Sangop, Sirion, Sunisa, Auksika, Apipoo, Chanin, Bunika, Kamben, Precha, Sirithron, and Sunthorn