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Cognomen Ploynoy (Ploynoy ) , around the globe, is a rare surname. The last name Ploynoy is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ploynoy | Thailand |
Wimon, Mutita, Patiya, Keattlphom, Ittipon, and Kumlungpon