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