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