Family name Ільковіч (Ільковіч 
, Ilkovič 
) , in all the world, is a very rare last name. The family name Ільковіч is habitual in Eastern Europe, particularly Slovakia, where it is a rare surname, and Ukraine, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ільковіч | Ukraine |
| Ilkovič | Slovakia |