Family name Matulyak (Матуляк 
, Matulyak 
) , across the world, is a rare surname. The last name Matulyak is habitual in Ukraine, where it is a rare surname, Belarus, where it is a very rare surname, and Kazakhstan. In absolute terms, it most frequently occurs in Ukraine, Russia, and Kazakhstan. Very seldom, Matulyak is the forename as well as the last name.