Family name พรเบญจรัตน์ (พรเบญจรัตน์ 
) , in the world, is an extremely rare last name. The cognomen พรเบญจรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| พรเบญจรัตน์ | Thailand |