Cognomen ຄາຈນ (ຄາຈນ 
) , across the world, is a rare surname. The surname ຄາຈນ is characteristic of South-eastern Asia, particularly Laos, where it is quite a rare surname. More frequently, ຄາຈນ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ຄາຈນ | Laos |