Throughout the world, Rosanio (Rosanio 
) is a rare primarily boy's, but very seldom feminine first name. The forename Rosanio is characteristic of Latin America and the Caribbean, particularly Guatemala, where it is a rare male name, Argentina, where it is a very rare masculine name, and Mexico. Measured by absolute frequency, the name is most common in Latin America and the Caribbean, particularly Guatemala, Brazil, and Mexico. Likewise, Rosanio is the last name as well as the forename.