Surname Kowtun (Ковтун 
, Kowtun 
) , in all the world, is a common family name. The last name Kowtun is habitual in Ukraine, where it is quite a common surname, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Ковтун | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |
| Kowtun | Poland, France, Canada, United States, Germany |