Family name สิทธิรักษ์ (สิทธิรักษ์ 
, Sittirak , Sittiruk 
) , worldwide, is quite a rare last name. The cognomen สิทธิรักษ์ is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname. Very seldom, สิทธิรักษ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สิทธิรักษ์, Sittirak | Thailand |
| Sittirug, Sittiruk | Thailand, United States |
Sitdhiraks, Sithirak, Sithiraks, Sitthirak, Sitthiraks, Sitthiraksa, Sitthiruk, Sitttiruk, and Sytthirak
|
อรอุมา สิทธิรักษ์ Female volleyball player from Thailand, TH (b. 1986) |
|