Cognomen ニーナ (Nina 
, Nnenna 
, Niina 
) , throughout the world, is a widespread family name. The cognomen ニーナ is characteristic of Georgia, where it is a common surname, Algeria, and Bolivia (explore the name in all countries). In absolute terms, it is commonest in Algeria, Nigeria, and Poland. More frequently, ニーナ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nina | Algeria, Nigeria, United States, Germany, Indonesia |
| Nnenna | Brazil, United Kingdom, Nigeria, United States, Germany |
| Niina | India, Algeria, United States, Germany, Indonesia |
| ニーナ | Japan |