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