Family name Koykobkarn (Koykobkarn 
) , all around the world, is a very rare surname. The surname Koykobkarn is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Koykobkarn | Thailand |
Adisit, Dechpol, Ninnate, and Khwanchanok