Family name Porn-Ngam (Porn-Ngam 
) , throughout the world, is an extremely rare last name. The cognomen Porn-Ngam is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Parts of the name also exists independently as a first name Porn, and a last name Ngam.
| VARIANT | COUNTRY |
|---|---|
| Porn-Ngam | Thailand |