Family name Phetapirak (Phetapirak 
) , worldwide, is a very rare last name. The family name Phetapirak is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phetapirak | Thailand |
Suwinai, Pichaya, Natnicha, Naovarat, and Thatchakorn