Avanti! is a 1972 comedy film produced and directed by Billy Wilder. The film stars Jack Lemmon, Juliet Mills, and Clive Revill, with supporting roles by Edward Andrews, Gianfranco Barra, Franco Angrisano, and Pippo Franco. The screenplay by Wilder and I. A. L. Diamond is based on the play of the same name by Samuel Taylor, which had a short run on Broadway in 1968. The film was shot on-location on the Italian island of Ischia and in the city of Sorrento.