Surname ไพศาลรัตนกูล (ไพศาลรัตนกูล 
) , around the globe, is an extremely rare cognomen. The family name ไพศาลรัตนกูล is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ไพศาลรัตนกูล | Thailand |