Family name Biluš-Gagić (Biluš-Gagić 
) , around the globe, is a very rare surname. The family name Biluš-Gagić is characteristic of Southern Europe, particularly Croatia, where it is a rare surname. Parts of the name also exists independently as a last name Biluš, and a last name Gagić.
| VARIANT | COUNTRY |
|---|---|
| Biluš-Gagić | Croatia |