Family name ปิยะมาลย์มาศ (ปิยะมาลย์มาศ 
) , all over the world, is a very rare surname. The family name ปิยะมาลย์มาศ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ปิยะมาลย์มาศ | Thailand |