Last name Grunyk (Груник 
, Grunyk 
) , throughout the world, is a rare cognomen. The surname Grunyk is characteristic of Ukraine, where it is a rare surname, Armenia, and Poland, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Eastern Europe, particularly Ukraine, Russia, and Poland. Much less frequently, Grunyk is the forename as well as the last name.