Last name ปิยธนะวัฒน์ (ปิยธนะวัฒน์ 
) , throughout the world, is an extremely rare cognomen. The surname ปิยธนะวัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ปิยธนะวัฒน์ | Thailand |