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Cognomen Andrusiak (Andrusiak , Андрусяк , Андрусиак ) , across the world, is quite a rare last name. The family name Andrusiak is habitual in Ukraine, where it is quite a rare surname, Canada, where it is a rare surname, and Belarus. In absolute terms, it is commonest in Ukraine, Russia, and Canada. Much less frequently, Andrusiak is the forename as well as the last name.