Cognomen Gritchenko (Гриченко 
, Гритченко , Gritchenko 
) , across the world, is quite a rare last name. The last name Gritchenko is habitual in Eastern Europe, particularly Belarus, where it is quite a rare surname, Ukraine, where it is a rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Гритченко, Гриченко | Kazakhstan, Russia, Ukraine, Belarus |
| Gritchenko | Russia, United States, Belarus |