Surname วงศ์ทองศิริ (วงศ์ทองศิริ 
) , all over the world, is a very rare family name. The last name วงศ์ทองศิริ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| วงศ์ทองศิริ | Thailand |