Family name Koltchenko (Кольченко 
, Koltchenko 
) , worldwide, is quite a rare last name. The family name Koltchenko is habitual in Ukraine, where it is quite a rare surname, Belarus, where it is a rare surname, and Kazakhstan. Measured by absolute frequency, it is commonest in Russia, Ukraine, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Кольченко | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Koltchenko | Canada |