Cognomen Ployjirachai (Ployjirachai 
) , throughout the world, is an extremely rare surname. The last name Ployjirachai is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ployjirachai | Thailand |
Suphit, Veeradet, and Pongsathron