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Family name Černja (Черня
, Černja
) , around the world, is a rare cognomen. The last name Černja is characteristic of Belarus, where it is a rare surname, Croatia, and Ukraine. In absolute terms, this name is the most popular in Eastern Europe, particularly Ukraine, Russia, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Черня | Ukraine, Russia, Belarus, Kazakhstan |
| Černja | Croatia |