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