| Person | Type | Job | Role(s) |
|---|---|---|---|
 David L. Wolper | Crew | Production | Executive Producer |
 David Saxon | Crew | Editing | Editor |
David Shaw | Crew | Writing | Screenplay, Story |
Derek Ball | Crew | Sound | Sound |
Howard Shoup | Crew | Costume & Make-Up | Costume Design |
Jeff Bushelman | Crew | Sound | Sound Editor |
 Lynn Stalmaster | Crew | Production | Casting |
Marc Frédérix | Crew | Art | Art Direction |
 Mary Selway | Crew | Production | Additional Casting |
 Mel Stuart | Crew | Directing | Director |
Robert K. Lambert | Crew | Editing | Assistant Editor |
Ron Berkeley | Crew | Costume & Make-Up | Makeup Artist |
Stan Margulies | Crew | Production | Producer |
Van Allen James | Crew | Sound | Sound Editor |
Vilis Lapenieks | Crew | Camera | Director of Photography |
Vittorio Biseo | Crew | Costume & Make-Up | Makeup Artist |
Walter Scharf | Crew | Sound | Original Music Composer |
Mario Olivieri | Crew | Production | Location Manager |
Doreen Dearnaley | Crew | Directing | Continuity |
Frawley Becker | Crew | Crew | Dialogue Coach |
Robert Glenn | Crew | Sound | Sound Editor |
 Anita Ekberg | Cast | Actress | Performer |
 Aubrey Morris | Cast | Actor | Harry Dix |
 Ben Gazzara | Cast | Actor | Card Player |
 Carol Cleveland | Cast | Actress | Travel Agent |
 Catherine Spaak | Cast | Actress | Woman Posing for Photographer |
 Donovan | Cast | Actor | Singer in Youth Hostel |
 Elsa Martinelli | Cast | Actress | Maria, Woman on Venetian Bridge |
 Ermelinda De Felice | Cast | Actress | Italian Woman in Automobile Accident |
 Hilarie Thompson | Cast | Actress | Shelly Ferguson |
 Ian McShane | Cast | Actor | Charlie Cartwright |
 Jennifer White | Cast | Actress | Dot |
 Joan Collins | Cast | Actress | Girl on Sidewalk |
 John Cassavetes | Cast | Actor | Steve |
 Luke Halpin | Cast | Actor | Bo |
 Marina Berti | Cast | Actress | Gina |
 Mario Carotenuto | Cast | Actor | Giuseppe |
 Marty Ingels | Cast | Actor | Bert Greenfield |
 Michael Constantine | Cast | Actor | Jack Harmon |
 Mildred Natwick | Cast | Actress | Jenny Grant |
 Murray Hamilton | Cast | Actor | Fred Ferguson |
 Norman Fell | Cast | Actor | Harve Blakely |
 Pamela Britton | Cast | Actress | Feda |
 Patricia Routledge | Cast | Actress | Mrs. Featherstone |
 Paul Esser | Cast | Actor | German Sergeant |
 Peggy Cass | Cast | Actress | Edna Ferguson |
 Reva Rose | Cast | Actress | Irma Blakely |
 Robert Vaughn | Cast | Actor | Antonio, Photographer |
 Sandy Baron | Cast | Actor | John Marino |
 Senta Berger | Cast | Actress | London Saleswoman |
 Suzanne Pleshette | Cast | Actress | Sam Perkins |
 Suzy Falk | Cast | Actress | German Sergeant's Wife |
 Virna Lisi | Cast | Actress | John's Beautiful Cousin in Rome |
 Vittorio De Sica | Cast | Actor | Shoemaker |
| Person | Type | Job | Role(s) |
