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Cognomen Khwathai (Khwathai ) , across the world, is a rare surname. The last name Khwathai is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khwathai | Thailand |
Supanut, Ittipon, Ittipop, Methawee, and Thutsaneeluck