>
Globally, Cảo (Као
, Cảo
) is a very rare epicene first name. The given name Cảo is characteristic of Eastern Europe, particularly Russia, where it is an extremely rare gender-neutral name. More frequently, Cảo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Као | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Cảo | Vietnam |