Cognomen Nwambu (Nwambu 
) , in all the world, is a rare family name. The last name Nwambu is characteristic of Nigeria, where it is a rare surname, and the United States, where it is an extremely rare surname. Likewise, Nwambu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nwambu | United States, Nigeria |