Surname วทันย์ (Wathan 
, วทันย์ 
) , in all the world, is quite a common last name. The last name วทันย์ is characteristic of Myanmar, where it is quite a common surname, Singapore, where it is a rare surname, and the United Kingdom. Measured by absolute frequency, it most frequently occurs in Myanmar, Indonesia, and the United Kingdom. Also, วทันย์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wathan | Myanmar, United Kingdom, United States, Indonesia, Malaysia |
| วทันย์ | Thailand |