Family name Kumyam (Kumyam 
) , in the world, is a very rare last name. The surname Kumyam is characteristic of Thailand, where it is a very rare surname, and India, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kumyam | India, Thailand |
Supoj, Kumpang, Achiraya, Manutchaya, and Watcharapol