Family name Іштван-Ференц (Іштван-Ференц 
) , all over the world, is an extremely rare last name. Much more prevalently, Іштван-Ференц is the forename as well as the last name. Parts of the name also exists independently as a first name Іштван, and a last name Ференц.
| VARIANT | COUNTRY |
|---|---|
| Іштван-Ференц | Ukraine |