Last name กมลประสิทธิ์สุข (กมลประสิทธิ์สุข 
) , in the entire world, is a very rare surname. The last name กมลประสิทธิ์สุข is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| กมลประสิทธิ์สุข | Thailand |