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Family name Ruamyat (Ruamyat ) , across the world, is a very rare cognomen. The family name Ruamyat is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruamyat | Thailand |
Nisa, Phubet, Natcha, Wandee, Bunphen, Phanwisa, Nattawut, Sasithorn, Phra Samrit, and Phra Somrit