Last name รักสิทธิ (รักสิทธิ 
) , throughout the world, is an extremely rare family name. The family name รักสิทธิ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Also, รักสิทธิ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รักสิทธิ | Thailand |