Marcello \m(a)-rcello, mar-cello\ as a boy's name is a variant of Marcel (French) and Marcellus (Latin). See for meaning of Marcello.
The baby name Marcello sounds like Marcelo and Marcell. Other similar baby names are Darcell, Marzell, Martell, Marcely, Marcellino, Marcellin, Marcelin, Markell and Marvell.