Cognomen Okankwu (Okankwu 
) , across the world, is a very rare surname. The surname Okankwu is habitual in Canada, where it is a very rare surname, Nigeria, and South Africa, where it is an extremely rare surname. Also, Okankwu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Okankwu | South Africa, Nigeria, United States, Canada |