Cognomen Janthawet (Janthawet 
) , throughout the world, is a very rare last name. The last name Janthawet is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
Seri, Jirapan, Nonglak, Uraiwan, Pinprapha, Wiwatchai, Natthitanan, Sitthichai, and Patcharakorn