Surname สันติรัฐ (สันติรัฐ 
, Santirath 
) , in all the world, is an extremely rare last name. The cognomen สันติรัฐ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, สันติรัฐ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สันติรัฐ | Thailand |
| Santirath | Thailand, India |