 Suzy KendallJane | Jane |
 Tina AumontDaniela Anselmi | Daniela Anselmi |
 Luc MerendaRoberto | Roberto |
 John RichardsonProf. Franz | Prof. Franz |
 Roberto BisaccoStefano Vanzi | Stefano Vanzi |
 Ernesto ColliGianni Tomasso, the Scarf Vendor | Gianni Tomasso, the Scarf Vendor |
 Angela CovelloKatia | Katia |
 Carla BraitUrsula | Ursula |
 Conchita AiroldiCarol Peterson | Carol Peterson |
 Patrizia AdiutoriFlorence Heineken | Florence Heineken |
 Luciano BartoliMotorcycle Guy #1 | Motorcycle Guy #1 |
| GGianni GrecoMotorcycle Guy #2 | Motorcycle Guy #2 |
 Luciano De AmbrosisInspector Martino | Inspector Martino |
| EEnrico DiMarcoVillage Idiot | Village Idiot |
 Giorgio DolfinSlim Boy in Village | Slim Boy in Village |
 Carlo AlighieroUncle Nino | Uncle Nino |
 Vincenzo CrocittiDelivery Man | Delivery Man |
| LLuca BonicalziTruck Driver | Truck Driver |
 Fausto Di BellaJohn, Flo's Boyfriend | John, Flo's Boyfriend |
 Giuseppe TerranovaCar Repairman | Car Repairman |
 Rosaria della FemminaProstitute | Prostitute |
| EErmelinda De FeliceWoman in Car with Roberto | Woman in Car with Roberto |
 Dolores CalòWoman with Green Dress at University Exit (uncredited) | Woman with Green Dress at University Exit (uncredited) |
 Renato CestièGianni Tomasso (child) (uncredited) | Gianni Tomasso (child) (uncredited) |
 Vera DrudiStefano's Landlady (uncredited) | Stefano's Landlady (uncredited) |
 Giuseppe MarroccoPoliceman at Crime Scene (uncredited) | Policeman at Crime Scene (uncredited) |
 Barbara MarzanoHippie Dancer (uncredited) | Hippie Dancer (uncredited) |
| OOsvaldo NatalePoliceman at Crime Scene (uncredited) | Policeman at Crime Scene (uncredited) |
 Alberto SorrentinoWitness at Crime Scene (uncredited) | Witness at Crime Scene (uncredited) |
