Surname Gaponiuk (Gaponiuk 
, Гапонюк 
) , in all the world, is quite a rare family name. The family name Gaponiuk is characteristic of Eastern Europe, particularly Ukraine, where it is quite a rare surname, Belarus, and Russia, where it is a rare surname. Much less frequently, Gaponiuk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gaponiuk | Poland, United States, France, Ukraine |
| Гапонюк | Kazakhstan, Ukraine, Russia, Belarus |
| ivan gaponiuk Ukrainian Righteous Among the Nations, UA (b. 1907) |
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| nadia gaponiuk Ukrainian Righteous Among the Nations, UA (b. 1910) |
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