Cognomen ถาวรวทัญญู (ถาวรวทัญญู 
) , around the globe, is an extremely rare last name. The last name ถาวรวทัญญู is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ถาวรวทัญญู | Thailand |