Cognomen Permthong (Permthong 
) , around the globe, is a very rare family name. The surname Permthong is characteristic of Thailand, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Much less frequently, Permthong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Permthong | United Kingdom, Thailand |