Cognomen Ivusic (Ivusic 
) , in the entire world, is a very rare family name. The surname Ivusic is habitual in Croatia, where it is a rare surname, Chile, where it is a very rare surname, and Germany. In absolute terms, it most frequently occurs in Germany, Croatia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Ivusic | Germany, Chile, Croatia, United States, Peru |