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Surname Ruengjumnian (Ruengjumnian ) , globally, is a very rare cognomen. The last name Ruengjumnian is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruengjumnian | Thailand |
Piangor, Saowanee, Thongchai, and Pattanachai