Cognomen Vongvadhanaroj (Vongvadhanaroj 
) , in the entire world, is an extremely rare last name. The family name Vongvadhanaroj is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Vongvadhanaroj | Thailand, United States |