Cognomen Iailenko (Яйленко 
, Iailenko 
) , around the globe, is a rare family name. The last name Iailenko is habitual in Ukraine, where it is a rare surname, Russia, where it is a very rare surname, and Georgia.
| VARIANT | COUNTRY |
|---|---|
| Яйленко | Russia, Ukraine |
| Iailenko | Georgia |