Cognomen Romachko (Ромашко 
, Romachko 
) , worldwide, is quite a common surname. The surname Romachko is habitual in Eastern Europe, particularly Belarus, where it is quite a common surname, Ukraine, where it is quite a rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Ромашко | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Romachko | New Zealand |