Surname พระธวัชชัย (Phra Tawatchai 
, Phrathawatchai , พระธวัชชัย ) , globally, is an extremely rare family name. Predominantly, พระธวัชชัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phrathawatchai, พระธวัชชัย, Phra Tawatchai | Thailand |