Cognomen กุลติยะรัตน์ (กุลติยะรัตน์ 
) , all over the world, is an extremely rare last name. The cognomen กุลติยะรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| กุลติยะรัตน์ | Thailand |