Family name Kryachun (Kryachun 
, Крячун 
) , throughout the world, is a rare last name. The cognomen Kryachun is habitual in Ukraine, where it is a rare surname, Belarus, and Kyrgyzstan. In absolute terms, this name is the most popular in Eastern Europe, particularly Ukraine, Russia, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Kryachun | Russia, Czechia, United States, Ukraine |
| Крячун | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |