Cognomen Marunko (Marunko 
, Марунько 
) , in the world, is a rare last name. The surname Marunko is habitual in Eastern Europe, particularly Ukraine, where it is a rare surname, Belarus, where it is a very rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Marunko | United States, Russia, Ukraine |
| Марунько | Belarus, Kazakhstan, Russia, Ukraine |