Surname คุณทอง (Kounthong 
, คุณทอง , Younthong ) , all over the world, is a rare last name. The cognomen คุณทอง is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Likewise, คุณทอง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kounthong | Thailand, United States, Laos |
| คุณทอง, Younthong, Youkthong | Thailand |
Khounthong, Khunthonk, Khunthorng, Kuntong, and Yountong