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Family name Phinyokhwan (Phinyokhwan ) , all around the world, is a very rare cognomen. The last name Phinyokhwan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phinyokhwan | Thailand |
Phethai, Kiadtisak, and Kittikawin