Cognomen Balanuca (Balanuca 
, Балануца 
) , around the world, is a rare last name. The cognomen Balanuca is habitual in Romania, where it is a rare surname, Ukraine, and Kazakhstan, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Eastern Europe, particularly Ukraine, Romania, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Balanuca | Romania, United Kingdom, United States, Italy |
| Балануца | Kazakhstan, Russia, Ukraine |