- Franco Leo - Viola's friend
- Gaetano Imbró - Viola's boyfriend
- Franco Giornelli - Alberto's brother
- María Cuadra - Marina
- Malisa Longo - Girl in Blue Bikini (uncredited)
- Anna Maria Perego - Alberto's mother (uncredited)
- Damiano Damiani
- Alberto Moravia
- Damiano Damiani
- Alberto Silvestri
-
Giorgio Agliani
- Franco Groppioni
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