Cognomen โพยมรัตน์ (โพยมรัตน์ 
) , in all the world, is a very rare family name. The family name โพยมรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Also, โพยมรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| โพยมรัตน์ | Thailand |