Surname สิริธีรศาสน์ (สิริธีรศาสน์ 
) , across the world, is an extremely rare family name. The family name สิริธีรศาสน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| สิริธีรศาสน์ | Thailand |