Family name Antunica (Antunica 
) , in the world, is a very rare surname. The surname Antunica is characteristic of Croatia, where it is a rare surname, Argentina, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Antunica is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Antunica | Argentina, Croatia, Brazil, United States |