Surname วัธน์ (วัธน์ 
, Wattha 
) , all over the world, is a very rare family name. The family name วัธน์ is characteristic of Myanmar, where it is a very rare surname, Thailand, where it is an extremely rare surname, and the United States. Very seldom, วัธน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| วัธน์ | Thailand |
| Wattha | Thailand, United States, Myanmar, Brazil |