Family name Biavo (Blou 
, Biavo 
) , globally, is quite a rare surname. The last name Biavo is habitual in South Africa, where it is quite a rare surname, Algeria, where it is a rare surname, and Denmark. Not in comparison with a country's population, it is commonest in South Africa, Algeria, and France. Very seldom, Biavo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Blou | South Africa, Denmark, Morocco, Algeria, France |
| Biavo | Brazil, United States |