Last name ขัย (Khai 
, ขัย 
) , in the entire world, is a common surname. The last name ขัย 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. Likewise, ขัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khai | Myanmar, Vietnam, India, Mongolia, Malaysia |
| ขัย | Thailand |