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Surname Khuanphadungsak (Khuanphadungsak ) , all around the world, is a rare cognomen. The family name Khuanphadungsak is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khuanphadungsak | Thailand |
Somjit, Apinya, Tasorn, Weerasak, Akkharawin, and Jirattaporn