Cognomen พิรุณสุนทร (พิรุณสุนทร 
, Piroonsoontorn , Phirunsuntorn ) , in the world, is a very rare family name. The last name พิรุณสุนทร is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phirunsuntorn, Pirunsuntorn, พิรุณสุนทร, Piroonsoontorn | Thailand |