Cognomen Piyasirikul (Piyasirikul 
) , worldwide, is a very rare last name. The cognomen Piyasirikul is characteristic of Thailand, where it is a very rare surname, and China, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Piyasirikul | China, Thailand |
ปิยะศิริกุล, and ปิยะสิริกุล