Cognomen Plyuiko (Plyuiko 
, Плюйко 
) , in all the world, is a rare surname. The cognomen Plyuiko is characteristic of Ukraine, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Plyuiko | Russia, Ukraine |
| Плюйко | Belarus, Russia, Kazakhstan, Ukraine |