Surname Phetrnin (Phetrnin 
) , throughout the world, is a very rare cognomen. The family name Phetrnin is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phetrnin | Thailand |
Angwara, Kitsana, Chindarat, and Thanyaphorn