Family name Postoyenko (Постоенко 
, Postoyenko 
) , throughout the world, is a rare cognomen. The surname Postoyenko is characteristic of Kyrgyzstan, where it is a rare surname, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Постоенко | Kyrgyzstan, Kazakhstan, Russia, Ukraine |
| Postoyenko | United States |
Постоиенко, and Постоєнко