Surname Matusyak (Matusyak 
, Матусяк 
) , in the world, is a rare cognomen. The last name Matusyak is habitual in Ukraine, where it is a rare surname, Russia, and Kazakhstan, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Matusyak | Russia, Canada, Ukraine |
| Матусяк | Kazakhstan, Russia, Ukraine |