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Surname Vioun (Вьюн
, Vioun
, Виун
) , worldwide, is a rare cognomen. The last name Vioun is habitual in Belarus, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Russia. In absolute terms, it most frequently occurs in Eastern Europe, particularly Russia, Belarus, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Вьюн | Belarus, Kazakhstan, Russia, Ukraine |
| Vioun | United States, Thailand |
| Виун | Russia |