Surname Jadek (Jadek 
) , around the world, is a rare cognomen. The family name Jadek is characteristic of Croatia, where it is quite a rare surname, Nicaragua, where it is a very rare surname, and Canada, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in Croatia, the United States, and Canada. Much less frequently, Jadek is the forename as well as the last name.