Family name Belja (Belja 
, Беля 
, Belje 
) , in the world, is quite a rare cognomen. The family name Belja is characteristic of Ukraine, where it is quite a rare surname, Serbia, and Bulgaria, where it is a rare surname. In absolute terms, it most frequently occurs in Ukraine, Russia, and Serbia. Also, Belja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Belja | Democratic Republic of the Congo, North Macedonia, Serbia, Italy, India |
| Беля | Russia, Bulgaria, Kazakhstan, Ukraine, Armenia |
| Belje | Argentina, India, Brazil |