Surname Pattarachalermwat (Pattarachalermwat 
) , worldwide, is a very rare family name. The last name Pattarachalermwat is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Pattarachalermwat | Thailand |
Distawat, Teerathun, and Siripornchai