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Surname Ruengrithskul (Ruengrithskul ) , in the entire world, is a very rare cognomen. The family name Ruengrithskul is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruengrithskul | Thailand |
Tatpong, Orakarn, Chanchai, Benjaporn, and Chonnikarn