Surname Биалоу (Биалоу 
, Bialou 
) , worldwide, is a very rare cognomen. The surname Биалоу is habitual in Estonia, where it is a rare surname, Belarus, and France, where it is a very rare surname. In absolute terms, it is the most numerous in Russia, France, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Биалоу | Russia |
| Bialou | United Kingdom, Belarus, Estonia, United States, France |