Surname קלאף (Clough 
, Klaff 
, קלאף 
) , in the world, is a common cognomen. The last name קלאף is characteristic of Reunion, where it is quite a common surname, the United Kingdom, where it is quite a rare surname, and Jamaica. Not in comparison with a country's population, it is commonest in the United States, the United Kingdom, and Australia.