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Cognomen Phetnu (Phetnu ) , throughout the world, is a rare last name. The family name Phetnu is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phetnu | Thailand |
Sunun, Kitti, Pimon, Thong, Winai, Prateep, Nuttiya, Isariya, Supaporn, Phonsuda, Romteera, Thaweesak, Chidchanok, Ratthaphol, and Hataichanok