Cognomen คุณาทัย (คุณาทัย 
) , throughout the world, is a very rare last name. The family name คุณาทัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, คุณาทัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| คุณาทัย | Thailand |