Family name ไพศาลธนไชย (ไพศาลธนไชย 
) , in all the world, is an extremely rare cognomen. The surname ไพศาลธนไชย is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ไพศาลธนไชย | Thailand |