Last name สิทธิ์เทศ (สิทธิ์เทศ 
) , across the world, is an extremely rare surname. The cognomen สิทธิ์เทศ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| สิทธิ์เทศ | Thailand |