Cognomen คุณวิทยา (คุณวิทยา 
, Khunwittaya , Khunvittaya ) , around the world, is a rare last name. The cognomen คุณวิทยา is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, คุณวิทยา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khunwittaya, Khunvittaya, Khunwitthaya, คุณวิทยา | Thailand |