I Due derelitti is a 1951 Italian melodrama film directed by Flavio Calzavara.
Count George of Kerlor, convinced that his wife has betrayed him and that little Gianni, the boy he raised as a son, is not in reality his own, entrusts the poor boy to a criminal nicknamed Snail, who already has a boy, Claudinet. Gianni is renamed Fanfan and, growing up with Claudinet, the two boys become inseparable.