Family name Vishniac (Вишняк 
, Vishniac 
, Вішняк ) , in the world, is quite a rare cognomen. The last name Vishniac is habitual in Ukraine, where it is quite a rare surname, Belarus, and Kazakhstan, where it is a rare surname. In absolute terms, it is the most numerous in Eastern Europe, particularly Ukraine, Russia, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Вишняк | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Vishniac | Canada, United States |
| Вішняк | Ukraine |
|
roman vishniac American photographer, US (b. 1897) |
|
| ethan vishniac American astronomer, US (b. 1955) |
|
|
| helen simpson vishniac mycologist |
|