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Family name Petnui (Petnui ) , globally, is a rare cognomen. The last name Petnui is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
Sawat, Pitukphong, Patcharin, Sununtaporn, Wutichai, Thaeerat, Krittaya, Kanyarat, Apichaya, Natsuda, Nattaya, Jiranuch, Piyarat, Patiwat, Pattama, Supansa, Supanee, Sarinya, Montira, Parada, Kusuma, Somnug, Master, Atith, Kamonchanok, and Vatcharaporn