Family name กมลรัตนา (Kamonratana 
, กมลรัตนา ) , in the world, is a rare surname. The family name กมลรัตนา is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Likewise, กมลรัตนา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kamonratana | United States, Thailand |
| กมลรัตนา | Thailand |