Family name קיילב (Caleb 
, Caeleb 
, קיילב 
) , in all the world, is a common cognomen. The cognomen קיילב is habitual in Antigua and Barbuda, where it is quite a common surname, Nigeria, and Ghana, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in Sub-Saharan Africa, particularly Nigeria, Kenya, and Ghana. More frequently, קיילב is the forename as well as the last name.