Throughout the world, קסטלו (Castello 
, קסטלו 
) is a rare unisex forename. The first name קסטלו is habitual in Italy, where it is quite a rare epicene name, the Democratic Republic of the Congo, where it is a rare male name, and Malaysia, where it is a very rare masculine name. Not in comparison with a country's population, this name is the most popular in Italy, the Democratic Republic of the Congo, and Indonesia. More prevalently, קסטלו is the last name as well as the forename.