Family name Ианна (Ianna 
, Ианна 
) , worldwide, is quite a rare cognomen. The cognomen Ианна is habitual in Nigeria, where it is a rare surname, Italy, and Australia. In absolute terms, it is commonest in Nigeria, the United States, and Italy. Likewise, Ианна is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ianna | Italy, Nigeria, United States, Greece, Brazil |
| Ианна | Russia |