Cognomen คำแดง (Khamdaeng 
, Kumdang 
, Khamdang 
) , around the globe, is a rare last name. The cognomen คำแดง is characteristic of Thailand, where it is quite a rare surname, Myanmar, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Also, คำแดง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khamdaeng | Laos, United States, Thailand |
| Kumdang | India, Nigeria, United States, Thailand |
| Khamdang | Malaysia, Myanmar, Thailand |
Kamdaeng, Kamdeang, Khamdaeang, Khamdaet, Khamdaong, Khamdaung, Khamdeang, Khamdoung, and Khammadaeng