Across the world, Cillo (Cillo 
) is a rare mostly feminine, but seldom boy's given name. The given name Cillo is characteristic of Italy, where it is a very rare epicene name, India, where it is a very rare predominantly feminine, but very seldom masculine name, and Philippines, where it is a very rare principally male, but scarcely girly name. More frequently, Cillo is the last name as well as the forename.