Last name クルズ (Kluz 
, クルズ) , globally, is quite a rare cognomen. The family name クルズ is characteristic of Eastern Europe, particularly Poland, where it is quite a rare surname, Slovakia, and Czechia. Measured by absolute frequency, this name is the most popular in Poland, the United States, and Czechia. Likewise, クルズ is the forename as well as the last name.