 Galli was given his national team debut in a friendly match against Greece on 5 October 1983, which ended in a 3–0 win to Italy.As a starter, Galli played in the 1986 World Cup in Mexico under manager Enzo Bearzot, as Italy were ousted in the round of 16 by eventual semi-finalists France, led by Michel Platini.During the tournament, in Italy's 1–1 draw against eventual champions Argentina in their second group match on 5 June, Galli drew criticism in the media for his goalkeeping on Maradona's equaliser.