Family name كروك (Kruk 
, Krok , Kroc 
) , worldwide, is a common cognomen. The surname كروك is characteristic of Poland, where it is quite a common surname, Czechia, where it is quite a rare surname, and Netherlands. Not in comparison with a country's population, it is the most numerous in Poland, the United States, and Netherlands. Also, كروك is the forename as well as the last name.