Family name Piyathas (Piyathas 
) , around the globe, is an extremely rare cognomen. Much more prevalently, Piyathas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Piyathas | Thailand |
Ponpai, Wanpen, Phurahong, Lertbhuwiwat, and Tongtraibhop