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Family name Thianthanyakij (Thianthanyakij ) , across the world, is a very rare surname. The family name Thianthanyakij is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thianthanyakij | Thailand |
Somkiat, Praphan, Pongwoot, and Jongkolnee