Cognomen Naotsuna (Naotsuna 
, Ии 
) , in the entire world, is a rare surname. The cognomen Naotsuna is characteristic of Russia, where it is a rare surname, and Kazakhstan, where it is a very rare surname. Likewise, Naotsuna is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Naotsuna | Japan, United States |
| Ии | Kazakhstan, Armenia, Russia, Ukraine |