Around the globe, 恺昱 (恺昱 
) is a very rare epicene first name. The forename 恺昱 is habitual in Eastern Asia, particularly China, where it is an extremely rare gender-neutral name. Much less frequently, 恺昱 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 恺昱 | China |