Worldwide, קאסו (Caso 
, קאסו 
) is a rare mostly boy's, but infrequently feminine first name. The given name קאסו is characteristic of Italy, where it is a rare epicene name, the Democratic Republic of the Congo, where it is a rare masculine name, and Philippines, where it is a very rare dominantly masculine, but seldom girly name. Measured by absolute frequency, it is commonest in the Democratic Republic of the Congo, Italy, and India. More prevalently, קאסו is the last name as well as the forename.