Cognomen Gavryshchuk (Гаврищук 
, Gavryshchuk 
, Гавришчук ) , in the world, is quite a rare surname. The cognomen Gavryshchuk is characteristic of Ukraine, where it is quite a rare surname, Tajikistan, and Belarus, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Ukraine, Russia, and Tajikistan.