Family name Piwatjarukul (Piwatjarukul 
) , all around the world, is an extremely rare last name. The family name Piwatjarukul is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Piwatjarukul | Thailand |
Akarawat, Thanyapat, Pitchaphat, and Thanyaphat