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Family name Iamthammachart (Iamthammachart ) , around the world, is a very rare cognomen. The family name Iamthammachart is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Iamthammachart | Thailand |
Suchaya, Songrat, Peerawat, Natdanai, and Natthapong