>
Cognomen Piyajaroenkij (Piyajaroenkij ) , in the world, is a very rare last name. The family name Piyajaroenkij is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Piyajaroenkij | Thailand |
Isawanut, Kunnanut, Thanakrit, and Kunjanarat