Family name クルーグ (Krug 
, クルーグ) , throughout the world, is a common cognomen. The last name クルーグ is characteristic of Germany, where it is quite a common surname, Austria, and Paraguay, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in Germany, the United States, and Brazil. Much less frequently, クルーグ is the forename as well as the last name.