Surname Ivkosic (Ivkosic 
) , globally, is a very rare cognomen. The family name Ivkosic is habitual in Austria, where it is a rare surname, Croatia, where it is a very rare surname, and Australia. Not in comparison with a country's population, this name is the most popular in Austria, Australia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Ivkosic | United States, Croatia, Austria, Australia |