Cognomen Неизвестность (Неизвестность 
) , across the world, is an extremely rare surname. The family name Неизвестность is habitual in Eastern Europe, particularly Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Неизвестность | Russia |
Мисс, Сама, Мистер, and Неизвестно