All around the world, ナンバ (ナンバ 
, Namba 
, Nanba 
) is a rare epicene first name. The forename ナンバ is habitual in Tanzania, where it is a very rare masculine name, Japan, where it is a very rare girly name, and Nigeria, where it is a very rare predominantly masculine, but scarcely feminine name. Not in comparison with a country's population, this name is the most popular in India, China, and Nigeria. Much less frequently, ナンバ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| ナンバ | Japan |
| Namba | South Africa, Brazil, United States, Papua New Guinea, Cameroon |
| Nanba | Brazil, Nigeria, United States, India, Japan |