Worldwide, Oaku (Oaku 
) is a very rare epicene first name. The forename Oaku is habitual in Nigeria, where it is a very rare gender-neutral name, and China, where it is an extremely rare male name. Likewise, Oaku is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Oaku | Nigeria, China, United States |