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Surname Yingtiamsak (Yingtiamsak ) , throughout the world, is a very rare cognomen. The surname Yingtiamsak is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Yingtiamsak | Thailand |
Onanong, Atthanon, Thanakorn, and Thanakorny