Cognomen Termngam (Termngam 
) , worldwide, is a very rare last name. The family name Termngam is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Termngam | Thailand |
Suriya, Saichon, Suthana, Yuwares, and Thatchayadol