Worldwide, Massio (Massio 
) is a very rare principally boy's, but very infrequently feminine given name. The forename Massio is habitual in Latin America and the Caribbean, particularly Brazil, where it is a very rare boy's name. More frequently, Massio is the last name as well as the forename.
Mr, Sandra, Sabine, Angela, Adelia, Claude, Brenda, Ronald, Donald, Nancie, Hector, Massimo, Michael, Sylvain, Phyllis, Richard, Laurent, Luciana, Facundo, Francis, Santiago, Geremias, Italo, Elvie, Elsie, Elisa, Amy, Bob, Mass, Anna, Paul, Raul, Jane, Jose, John, Joel, Laetitia, Juan, Ynes, Mario, Massi, Carol, Peggy, Robin, Derek, Damon, Janet, Jusly, Judy, and Joaquina