Cognomen Bliznik (Bliznik 
, Близник 
) , worldwide, is a rare last name. The cognomen Bliznik is characteristic of Eastern Europe, particularly Belarus, where it is a rare surname, Hungary, and Ukraine, where it is a very rare surname. Not in comparison with a country's population, it is commonest in the United States, Belarus, and Ukraine. Much less frequently, Bliznik is the forename as well as the last name.