Family name Brnabic (Brnabic 
) , across the world, is a rare cognomen. The surname Brnabic is habitual in Serbia, where it is quite a rare surname, Croatia, where it is a rare surname, and Australia, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Serbia, the United States, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Brnabic | Germany, Australia, Serbia, Croatia, United States |