Cognomen Ckai (ไค 
, Ckai 
) , around the world, is a very rare last name. The last name Ckai is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, Ckai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ไค | Thailand |
| Ckai | United States |