Cognomen ไพศาลวาณิชย์ (ไพศาลวาณิชย์ 
) , in all the world, is an extremely rare family name. The surname ไพศาลวาณิชย์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ไพศาลวาณิชย์ | Thailand |