Cognomen Pechnarai (Pechnarai 
) , worldwide, is a very rare last name. The surname Pechnarai is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Pechnarai | Thailand |
Thida, Chadarat, Jakapong, Benjaporn, and Thamrongsak