Cognomen 朱克 (Zuk 
, 朱克 
, Zuck 
) , in the world, is quite a common family name. The last name 朱克 is characteristic of Poland, where it is quite a rare surname, Estonia, and Lithuania. Not in comparison with a country's population, it most frequently occurs in Poland, the United States, and Germany. Likewise, 朱克 is the forename as well as the last name.