Family name ลาภประสิทธิ์สุข (ลาภประสิทธิ์สุข 
) , throughout the world, is a very rare cognomen. The last name ลาภประสิทธิ์สุข is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ลาภประสิทธิ์สุข | Thailand |