Surname กัณรัตน์ (กัณรัตน์ 
) , globally, is a very rare last name. The cognomen กัณรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, กัณรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กัณรัตน์ | Thailand |