Cognomen Khumthanom (Khumthanom 
) , globally, is a very rare family name. The surname Khumthanom is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname.
Aranya, Namfon, Orawan, Sinchai, Surasak, Pramote, Chanthip, Prapontanai, Sununthar, Prapaporn, Praponthanai, Thanaponn, Tikumporn, and Chonnaphat