Surname Janthaphong (Janthaphong 
) , around the globe, is a rare last name. The cognomen Janthaphong is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, and Malaysia, where it is a very rare surname.
Sasina, Yodchay, Khornsee, Khirakorn, Thanisara, Thonthanut, Naphachanok, and Thikhamphorn