Last name วงศ์วัฒน์ (Wongwat 
, วงศ์วัฒน์ ) , around the globe, is a rare family name. The surname วงศ์วัฒน์ is characteristic of Thailand, where it is a rare surname, the United Kingdom, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, วงศ์วัฒน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wongwat | United Kingdom, Thailand, United States |
| วงศ์วัฒน์ | Thailand |