Family name วัฒธนา (วัฒธนา 
) , all around the world, is an extremely rare cognomen. The last name วัฒธนา is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, วัฒธนา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| วัฒธนา | Thailand |