Throughout the world, Khái (Khái 
) is a very rare male first name. The first name Khái is characteristic of South-eastern Asia, particularly Vietnam, where it is a very rare masculine name. Likewise, Khái is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Khái | Vietnam |
|
khái hưng writer, VN (b. 1896) |
|
|
lê minh khái Vietnamese politicians, VN (b. 1964) |
|