Family name Крэк (Crack 
, Крэк 
) , in the world, is quite a rare surname. The surname Крэк is habitual in Guatemala, where it is quite a rare surname, El Salvador, and Australia, where it is a rare surname. Measured by absolute frequency, it is commonest in Indonesia, the United Kingdom, and Guatemala. Very seldom, Крэк is the forename as well as the last name.