Family name Vyshnyak (Вишняк 
, Vyshnyak 
, Вышняк ) , throughout the world, is quite a rare cognomen. The cognomen Vyshnyak is habitual in Ukraine, where it is quite a rare surname, Belarus, and Albania, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Eastern Europe, particularly Ukraine, Russia, and Belarus.