Surname Korys (Korys 
) , in the entire world, is a very rare last name. The surname Korys is habitual in Northern Europe, particularly Lithuania, where it is a rare surname, Estonia, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Lithuania, the United States, and Estonia. Much more frequently, Korys is the forename as well as the last name.