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Cognomen Chuaiphayak (Chuaiphayak ) , all over the world, is a very rare surname. The family name Chuaiphayak is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chuaiphayak | Thailand |
Wanpen, Arinrat, Ngatharin, Teerapong, and Duangkamon