Family name Sidtihan (Sidtihan 
) , around the globe, is a very rare surname. The family name Sidtihan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sidtihan | Thailand |
Atipatr, Tanakrit, Asamaphorn, Bunyaporn, and Thanakrit