Cognomen Іштван-Отілло (Іштван-Отілло 
) , in the entire world, is an extremely rare surname. Much more frequently, Іштван-Отілло is the forename as well as the last name. Parts of the name also exists independently as a first name Іштван, and a first name Отілло.
| VARIANT | COUNTRY |
|---|---|
| Іштван-Отілло | Ukraine |