Cognomen สักสิทธิ์ (สักสิทธิ์ 
) , across the world, is an extremely rare last name. The family name สักสิทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, สักสิทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สักสิทธิ์ | Thailand |