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Surname Sittijun (Sittijun ) , throughout the world, is a very rare cognomen. The cognomen Sittijun is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sittijun | Thailand |
Sirirak, Pornpun, Nichada, Dechawit, Woottana, Nuttaphon, Varantapron, and Patchayaporn