Surname Marusyak (Марусяк 
, Marusyak 
) , in the entire world, is quite a rare last name. The surname Marusyak is characteristic of Eastern Europe, particularly Ukraine, where it is quite a rare surname, Russia, where it is a rare surname, and Belarus, where it is a very rare surname. In absolute terms, this name is the most popular in Ukraine, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Марусяк | Belarus, Kazakhstan, Russia, Ukraine |
| Marusyak | Spain, Russia, Ukraine, United States, Italy |