Cognomen Dejkun (Dejkun 
, Дейкун 
) , all over the world, is quite a rare surname. The family name Dejkun is characteristic of Eastern Europe, particularly Belarus, where it is quite a rare surname, Ukraine, and Russia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Dejkun | Germany |
| Дейкун | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |