Surname ทรงศักดิ์ศิริ (ทรงศักดิ์ศิริ 
) , around the world, is an extremely rare last name. The surname ทรงศักดิ์ศิริ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ทรงศักดิ์ศิริ | Thailand |