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 | Ukraine, Kazakhstan, Belarus, Russia, Kyrgyzstan |
| Vishniac | United States, Canada |
| Вішняк | Ukraine |
|
roman vishniac American photographer, US (b. 1897) |
|
| ethan vishniac American astronomer, US (b. 1955) |
|
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| helen simpson vishniac mycologist |
|