Family name מרצ'לו (Marcello 
, מרצ'לו 
) , in the world, is a common cognomen. The last name מרצ'לו is characteristic of Italy, where it is quite a rare surname, Cyprus, and Argentina. Measured by absolute frequency, it is commonest in Italy, Brazil, and Indonesia. More frequently, מרצ'לו is the forename as well as the last name.