Cognomen קאס (Cass 
, Kass 
, קאס 
) , in the world, is a common family name. The family name קאס is characteristic of Curacao, where it is quite a common surname, Estonia, and Luxembourg (explore the name in all countries). Not in comparison with a country's population, it is commonest in the United States, the United Kingdom, and Australia. Much less frequently, קאס is the forename as well as the last name.