Family name Itunun (Itunun 
) , throughout the world, is a very rare last name. The family name Itunun is habitual in Nigeria, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, Itunun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Itunun | United States, Nigeria |