Last name ไคล์น (Khai 
, ไคล์น 
) , in the world, is a common cognomen. The family name ไคล์น is characteristic of South-eastern Asia, particularly Malaysia, where it is quite a common surname, Myanmar, and Brunei (explore the name in all countries). Measured by absolute frequency, it is the most numerous in South-eastern Asia, particularly Malaysia, Myanmar, and Vietnam. Also, ไคล์น is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khai | Malaysia, India, Vietnam, Mongolia, Myanmar |
| ไคล์น | Thailand |