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Last name Khitthuk (Khitthuk ) , in the world, is a very rare cognomen. The cognomen Khitthuk is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khitthuk | Thailand |
Prayot, Sarawut, Fuangfa, Krachang, and Chatchadaphon