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Family name Koltun (Koltun
, Колтун
, Kołtun
) , all around the world, is quite a rare last name. The cognomen Koltun is habitual in Eastern Europe, particularly Belarus, where it is quite a rare surname, Poland, and Ukraine. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Poland, Ukraine, and Russia. Likewise, Koltun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Koltun | Brazil, Poland, United States, Argentina, Germany |
| Колтун | Belarus, Kazakhstan, Russia, Ukraine |
| Kołtun | Poland, United Kingdom |