Cognomen คนเก่ง (Talent 
, Guffy 
, คนเก่ง) , all over the world, is quite a rare last name. The family name คนเก่ง is characteristic of Zimbabwe, where it is quite a rare surname, United Arab Emirates, and Ghana, where it is a rare surname. In absolute terms, it is the most numerous in the United States, Indonesia, and Zimbabwe. More prevalently, คนเก่ง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Talent | Indonesia, Zimbabwe, South Africa, United States, Ethiopia |
| Guffy | Indonesia, United Kingdom, South Africa, India, United States |
Alounny, Khonkeng, Khonyodying, Knokwadee, Knwu, Konkumnerd, and Voardee