Family name Беляв (Beliav 
, Беляв 
) , in all the world, is a very rare cognomen. The family name Беляв is characteristic of Eastern Europe, particularly Russia, where it is a very rare surname. More prevalently, Беляв is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Beliav | Democratic Republic of the Congo |
| Беляв | Russia |