Family name วัฒนาทร (Wattana 
, วัฒนาทร ) , worldwide, is quite a rare surname. The family name วัฒนาทร is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare surname, Singapore, where it is a very rare surname, and Indonesia. Not in comparison with a country's population, it is commonest in Thailand, Indonesia, and the United States. More prevalently, วัฒนาทร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wattana | Australia, Thailand, United States, Indonesia, Malaysia |
| วัฒนาทร | Thailand |