Across the world, Gritchenko (Гриченко 
, Гритченко , Gritchenko 
) is an extremely rare unknown gender given name. Much more frequently, Gritchenko is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Гритченко, Гриченко | Belarus, Russia, Kazakhstan, Ukraine |
| Gritchenko | Belarus, Russia, United States |