All over the world, Cilio (Cilio 
) is a rare male first name. The first name Cilio is characteristic of Brazil, where it is a rare boy's name, Peru, and Italy, where it is a rare largely male, but infrequently girly name. Measured by absolute frequency, it is commonest in Brazil, Italy, and Philippines. More frequently, Cilio is the last name as well as the forename.